diff --git a/.travis.yml b/.travis.yml
index c7d814a1c..e19d1e1fe 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ git:
   depth: false # https://stackoverflow.com/a/51727114/3714539
 before_install:
   - mkdir .bin
-  - curl -Lo .bin/sbt https://raw.githubusercontent.com/coursier/sbt-extras/77c93346a2b52cf35cc72382125cfdbb25a00197/sbt
+  - curl -Lo .bin/sbt https://github.com/coursier/sbt-extras/raw/5fb3c11d689d5aad1ead8c2ecf02e1177e5d6a88/sbt
   - chmod +x .bin/sbt
   - export PATH="$(pwd)/.bin:$PATH"
   - export TRAVIS_SCALA_VERSION=2.12.8
diff --git a/appveyor.yml b/appveyor.yml
index 5c52755c0..f4786bc9b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,8 +3,8 @@ version: '{build}'
 os: Windows Server 2012
 install:
   - cmd: mkdir C:\sbt
-  - cmd: curl -Lo C:\sbt\sbt https://github.com/coursier/sbt-launcher/releases/download/v1.2.5/csbt
-  - cmd: curl -Lo C:\sbt\sbt.bat https://github.com/coursier/sbt-launcher/releases/download/v1.2.5/csbt.bat
+  - cmd: curl -Lo C:\sbt\sbt https://github.com/coursier/sbt-launcher/releases/download/v1.2.9/csbt
+  - cmd: curl -Lo C:\sbt\sbt.bat https://github.com/coursier/sbt-launcher/releases/download/v1.2.9/csbt.bat
   - cmd: SET JAVA_HOME=C:\Program Files\Java\jdk1.8.0
   - cmd: SET PATH=C:\sbt;%JAVA_HOME%\bin;%PATH%
   - cmd: SET JAVA_OPTS=-Xmx4g -Xss2m
diff --git a/build.sbt b/build.sbt
index a32062f56..266635dac 100644
--- a/build.sbt
+++ b/build.sbt
@@ -15,13 +15,15 @@ inThisBuild(List(
   )
 ))
 
+val coursierVersion0 = "1.1.0-M14-2"
+
 lazy val `lm-coursier` = project
   .in(file("modules/lm-coursier"))
-  .enablePlugins(ContrabandPlugin)
   .settings(
     shared,
+    Mima.settings,
     libraryDependencies ++= Seq(
-      "io.get-coursier" %% "coursier" % "1.1.0-M14-2",
+      "io.get-coursier" %% "coursier" % coursierVersion0,
       // We depend on librarymanagement-ivy rather than just
       // librarymanagement-core to handle the ModuleDescriptor passed
       // to DependencyResolutionInterface.update, which is an
@@ -29,16 +31,32 @@ lazy val `lm-coursier` = project
       // is ignored).
       "org.scala-sbt" %% "librarymanagement-ivy" % "1.2.4",
       "org.scalatest" %% "scalatest" % "3.0.7" % Test
+    )
+  )
+
+lazy val `lm-coursier-shaded` = project
+  .in(file("modules/lm-coursier/target/shaded-module"))
+  .enablePlugins(ShadingPlugin)
+  .settings(
+    shared,
+    unmanagedSourceDirectories.in(Compile) := unmanagedSourceDirectories.in(Compile).in(`lm-coursier`).value,
+    shading,
+    shadingNamespace := "lmcoursier.internal.shaded",
+    shadeNamespaces ++= Set(
+      "coursier",
+      "shapeless",
+      "argonaut"
     ),
-    managedSourceDirectories in Compile +=
-      baseDirectory.value / "src" / "main" / "contraband-scala",
-    sourceManaged in (Compile, generateContrabands) := baseDirectory.value / "src" / "main" / "contraband-scala",
-    contrabandFormatsForType in generateContrabands in Compile := DatatypeConfig.getFormats
+    libraryDependencies ++= Seq(
+      "io.get-coursier" %% "coursier" % coursierVersion0 % "shaded",
+      "org.scala-lang.modules" %% "scala-xml" % "1.1.1", // depending on that one so that it doesn't get shaded
+      "org.scala-sbt" %% "librarymanagement-ivy" % "1.2.4",
+      "org.scalatest" %% "scalatest" % "3.0.7" % Test
+    )
   )
 
 lazy val `sbt-coursier-shared` = project
   .in(file("modules/sbt-coursier-shared"))
-  .enablePlugins(ScriptedPlugin)
   .dependsOn(`lm-coursier`)
   .settings(
     plugin,
@@ -47,10 +65,19 @@ lazy val `sbt-coursier-shared` = project
     testFrameworks += new TestFramework("utest.runner.Framework")
   )
 
+lazy val `sbt-coursier-shared-shaded` = project
+  .in(file("modules/sbt-coursier-shared/target/shaded-module"))
+  .dependsOn(`lm-coursier-shaded`)
+  .settings(
+    plugin,
+    generatePropertyFile,
+    unmanagedSourceDirectories.in(Compile) := unmanagedSourceDirectories.in(Compile).in(`sbt-coursier-shared`).value
+  )
+
 lazy val `sbt-lm-coursier` = project
   .in(file("modules/sbt-lm-coursier"))
   .enablePlugins(ScriptedPlugin)
-  .dependsOn(`sbt-coursier-shared`)
+  .dependsOn(`sbt-coursier-shared-shaded`)
   .settings(
     plugin,
     sbtTestDirectory := sbtTestDirectory.in(`sbt-coursier`).value,
@@ -59,8 +86,8 @@ lazy val `sbt-lm-coursier` = project
 
       // TODO Get those automatically
       // (but shouldn't scripted itself handle that…?)
-       publishLocal.in(`lm-coursier`).value
-       publishLocal.in(`sbt-coursier-shared`).value
+       publishLocal.in(`lm-coursier-shaded`).value
+       publishLocal.in(`sbt-coursier-shared-shaded`).value
      }
    )
 
@@ -125,8 +152,10 @@ lazy val `sbt-coursier-root` = project
   .in(file("."))
   .aggregate(
     `lm-coursier`,
+    `lm-coursier-shaded`,
     `sbt-coursier`,
     `sbt-coursier-shared`,
+    `sbt-coursier-shared-shaded`,
     `sbt-lm-coursier`,
     `sbt-pgp-coursier`,
     `sbt-shading`
diff --git a/modules/lm-coursier/src/main/contraband-scala/coursier/lmcoursier/CoursierConfiguration.scala b/modules/lm-coursier/src/main/contraband-scala/coursier/lmcoursier/CoursierConfiguration.scala
deleted file mode 100644
index e466689ac..000000000
--- a/modules/lm-coursier/src/main/contraband-scala/coursier/lmcoursier/CoursierConfiguration.scala
+++ /dev/null
@@ -1,135 +0,0 @@
-/**
- * This code is generated using [[http://www.scala-sbt.org/contraband/ sbt-contraband]].
- */
-
-// DO NOT EDIT MANUALLY
-package coursier.lmcoursier
-final class CoursierConfiguration private (
-  val log: Option[xsbti.Logger],
-  val resolvers: Vector[sbt.librarymanagement.Resolver],
-  val reorderResolvers: Boolean,
-  val parallelDownloads: Int,
-  val maxIterations: Int,
-  val sbtScalaOrganization: Option[String],
-  val sbtScalaVersion: Option[String],
-  val sbtScalaJars: Vector[java.io.File],
-  val interProjectDependencies: Vector[coursier.core.Project],
-  val excludeDependencies: Vector[(String, String)],
-  val fallbackDependencies: Vector[coursier.lmcoursier.FallbackDependency],
-  val autoScalaLibrary: Boolean,
-  val hasClassifiers: Boolean,
-  val classifiers: Vector[String],
-  val mavenProfiles: Vector[String],
-  val scalaOrganization: Option[String],
-  val scalaVersion: Option[String],
-  val authenticationByRepositoryId: Vector[(String, coursier.core.Authentication)],
-  val credentials: Seq[coursier.credentials.Credentials],
-  val logger: Option[coursier.cache.CacheLogger],
-  val cache: Option[java.io.File]) extends Serializable {
-  
-  private def this() = this(None, sbt.librarymanagement.Resolver.defaults, true, 6, 100, None, None, Vector.empty, Vector.empty, Vector.empty, Vector.empty, true, false, Vector.empty, Vector.empty, None, None, Vector.empty, Vector.empty, None, None)
-  
-  override def equals(o: Any): Boolean = o match {
-    case x: CoursierConfiguration => (this.log == x.log) && (this.resolvers == x.resolvers) && (this.reorderResolvers == x.reorderResolvers) && (this.parallelDownloads == x.parallelDownloads) && (this.maxIterations == x.maxIterations) && (this.sbtScalaOrganization == x.sbtScalaOrganization) && (this.sbtScalaVersion == x.sbtScalaVersion) && (this.sbtScalaJars == x.sbtScalaJars) && (this.interProjectDependencies == x.interProjectDependencies) && (this.excludeDependencies == x.excludeDependencies) && (this.fallbackDependencies == x.fallbackDependencies) && (this.autoScalaLibrary == x.autoScalaLibrary) && (this.hasClassifiers == x.hasClassifiers) && (this.classifiers == x.classifiers) && (this.mavenProfiles == x.mavenProfiles) && (this.scalaOrganization == x.scalaOrganization) && (this.scalaVersion == x.scalaVersion) && (this.authenticationByRepositoryId == x.authenticationByRepositoryId) && (this.credentials == x.credentials) && (this.logger == x.logger) && (this.cache == x.cache)
-    case _ => false
-  }
-  override def hashCode: Int = {
-    37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (17 + "coursier.lmcoursier.CoursierConfiguration".##) + log.##) + resolvers.##) + reorderResolvers.##) + parallelDownloads.##) + maxIterations.##) + sbtScalaOrganization.##) + sbtScalaVersion.##) + sbtScalaJars.##) + interProjectDependencies.##) + excludeDependencies.##) + fallbackDependencies.##) + autoScalaLibrary.##) + hasClassifiers.##) + classifiers.##) + mavenProfiles.##) + scalaOrganization.##) + scalaVersion.##) + authenticationByRepositoryId.##) + credentials.##) + logger.##) + cache.##)
-  }
-  override def toString: String = {
-    "CoursierConfiguration(" + log + ", " + resolvers + ", " + reorderResolvers + ", " + parallelDownloads + ", " + maxIterations + ", " + sbtScalaOrganization + ", " + sbtScalaVersion + ", " + sbtScalaJars + ", " + interProjectDependencies + ", " + excludeDependencies + ", " + fallbackDependencies + ", " + autoScalaLibrary + ", " + hasClassifiers + ", " + classifiers + ", " + mavenProfiles + ", " + scalaOrganization + ", " + scalaVersion + ", " + authenticationByRepositoryId + ", " + credentials + ", " + logger + ", " + cache + ")"
-  }
-  private[this] def copy(log: Option[xsbti.Logger] = log, resolvers: Vector[sbt.librarymanagement.Resolver] = resolvers, reorderResolvers: Boolean = reorderResolvers, parallelDownloads: Int = parallelDownloads, maxIterations: Int = maxIterations, sbtScalaOrganization: Option[String] = sbtScalaOrganization, sbtScalaVersion: Option[String] = sbtScalaVersion, sbtScalaJars: Vector[java.io.File] = sbtScalaJars, interProjectDependencies: Vector[coursier.core.Project] = interProjectDependencies, excludeDependencies: Vector[(String, String)] = excludeDependencies, fallbackDependencies: Vector[coursier.lmcoursier.FallbackDependency] = fallbackDependencies, autoScalaLibrary: Boolean = autoScalaLibrary, hasClassifiers: Boolean = hasClassifiers, classifiers: Vector[String] = classifiers, mavenProfiles: Vector[String] = mavenProfiles, scalaOrganization: Option[String] = scalaOrganization, scalaVersion: Option[String] = scalaVersion, authenticationByRepositoryId: Vector[(String, coursier.core.Authentication)] = authenticationByRepositoryId, credentials: Seq[coursier.credentials.Credentials] = credentials, logger: Option[coursier.cache.CacheLogger] = logger, cache: Option[java.io.File] = cache): CoursierConfiguration = {
-    new CoursierConfiguration(log, resolvers, reorderResolvers, parallelDownloads, maxIterations, sbtScalaOrganization, sbtScalaVersion, sbtScalaJars, interProjectDependencies, excludeDependencies, fallbackDependencies, autoScalaLibrary, hasClassifiers, classifiers, mavenProfiles, scalaOrganization, scalaVersion, authenticationByRepositoryId, credentials, logger, cache)
-  }
-  def withLog(log: Option[xsbti.Logger]): CoursierConfiguration = {
-    copy(log = log)
-  }
-  def withLog(log: xsbti.Logger): CoursierConfiguration = {
-    copy(log = Option(log))
-  }
-  def withResolvers(resolvers: Vector[sbt.librarymanagement.Resolver]): CoursierConfiguration = {
-    copy(resolvers = resolvers)
-  }
-  def withReorderResolvers(reorderResolvers: Boolean): CoursierConfiguration = {
-    copy(reorderResolvers = reorderResolvers)
-  }
-  def withParallelDownloads(parallelDownloads: Int): CoursierConfiguration = {
-    copy(parallelDownloads = parallelDownloads)
-  }
-  def withMaxIterations(maxIterations: Int): CoursierConfiguration = {
-    copy(maxIterations = maxIterations)
-  }
-  def withSbtScalaOrganization(sbtScalaOrganization: Option[String]): CoursierConfiguration = {
-    copy(sbtScalaOrganization = sbtScalaOrganization)
-  }
-  def withSbtScalaOrganization(sbtScalaOrganization: String): CoursierConfiguration = {
-    copy(sbtScalaOrganization = Option(sbtScalaOrganization))
-  }
-  def withSbtScalaVersion(sbtScalaVersion: Option[String]): CoursierConfiguration = {
-    copy(sbtScalaVersion = sbtScalaVersion)
-  }
-  def withSbtScalaVersion(sbtScalaVersion: String): CoursierConfiguration = {
-    copy(sbtScalaVersion = Option(sbtScalaVersion))
-  }
-  def withSbtScalaJars(sbtScalaJars: Vector[java.io.File]): CoursierConfiguration = {
-    copy(sbtScalaJars = sbtScalaJars)
-  }
-  def withInterProjectDependencies(interProjectDependencies: Vector[coursier.core.Project]): CoursierConfiguration = {
-    copy(interProjectDependencies = interProjectDependencies)
-  }
-  def withExcludeDependencies(excludeDependencies: Vector[(String, String)]): CoursierConfiguration = {
-    copy(excludeDependencies = excludeDependencies)
-  }
-  def withFallbackDependencies(fallbackDependencies: Vector[coursier.lmcoursier.FallbackDependency]): CoursierConfiguration = {
-    copy(fallbackDependencies = fallbackDependencies)
-  }
-  def withAutoScalaLibrary(autoScalaLibrary: Boolean): CoursierConfiguration = {
-    copy(autoScalaLibrary = autoScalaLibrary)
-  }
-  def withHasClassifiers(hasClassifiers: Boolean): CoursierConfiguration = {
-    copy(hasClassifiers = hasClassifiers)
-  }
-  def withClassifiers(classifiers: Vector[String]): CoursierConfiguration = {
-    copy(classifiers = classifiers)
-  }
-  def withMavenProfiles(mavenProfiles: Vector[String]): CoursierConfiguration = {
-    copy(mavenProfiles = mavenProfiles)
-  }
-  def withScalaOrganization(scalaOrganization: Option[String]): CoursierConfiguration = {
-    copy(scalaOrganization = scalaOrganization)
-  }
-  def withScalaOrganization(scalaOrganization: String): CoursierConfiguration = {
-    copy(scalaOrganization = Option(scalaOrganization))
-  }
-  def withScalaVersion(scalaVersion: Option[String]): CoursierConfiguration = {
-    copy(scalaVersion = scalaVersion)
-  }
-  def withScalaVersion(scalaVersion: String): CoursierConfiguration = {
-    copy(scalaVersion = Option(scalaVersion))
-  }
-  def withAuthenticationByRepositoryId(authenticationByRepositoryId: Vector[(String, coursier.core.Authentication)]): CoursierConfiguration = {
-    copy(authenticationByRepositoryId = authenticationByRepositoryId)
-  }
-  def withCredentials(credentials: Seq[coursier.credentials.Credentials]): CoursierConfiguration = {
-    copy(credentials = credentials)
-  }
-  def withLogger(logger: Option[coursier.cache.CacheLogger]): CoursierConfiguration = {
-    copy(logger = logger)
-  }
-  def withLogger(logger: coursier.cache.CacheLogger): CoursierConfiguration = {
-    copy(logger = Option(logger))
-  }
-  def withCache(cache: Option[java.io.File]): CoursierConfiguration = {
-    copy(cache = cache)
-  }
-  def withCache(cache: java.io.File): CoursierConfiguration = {
-    copy(cache = Option(cache))
-  }
-}
-object CoursierConfiguration {
-  
-  def apply(): CoursierConfiguration = new CoursierConfiguration()
-  def apply(log: Option[xsbti.Logger], resolvers: Vector[sbt.librarymanagement.Resolver], reorderResolvers: Boolean, parallelDownloads: Int, maxIterations: Int, sbtScalaOrganization: Option[String], sbtScalaVersion: Option[String], sbtScalaJars: Vector[java.io.File], interProjectDependencies: Vector[coursier.core.Project], excludeDependencies: Vector[(String, String)], fallbackDependencies: Vector[coursier.lmcoursier.FallbackDependency], autoScalaLibrary: Boolean, hasClassifiers: Boolean, classifiers: Vector[String], mavenProfiles: Vector[String], scalaOrganization: Option[String], scalaVersion: Option[String], authenticationByRepositoryId: Vector[(String, coursier.core.Authentication)], credentials: Seq[coursier.credentials.Credentials], logger: Option[coursier.cache.CacheLogger], cache: Option[java.io.File]): CoursierConfiguration = new CoursierConfiguration(log, resolvers, reorderResolvers, parallelDownloads, maxIterations, sbtScalaOrganization, sbtScalaVersion, sbtScalaJars, interProjectDependencies, excludeDependencies, fallbackDependencies, autoScalaLibrary, hasClassifiers, classifiers, mavenProfiles, scalaOrganization, scalaVersion, authenticationByRepositoryId, credentials, logger, cache)
-  def apply(log: xsbti.Logger, resolvers: Vector[sbt.librarymanagement.Resolver], reorderResolvers: Boolean, parallelDownloads: Int, maxIterations: Int, sbtScalaOrganization: String, sbtScalaVersion: String, sbtScalaJars: Vector[java.io.File], interProjectDependencies: Vector[coursier.core.Project], excludeDependencies: Vector[(String, String)], fallbackDependencies: Vector[coursier.lmcoursier.FallbackDependency], autoScalaLibrary: Boolean, hasClassifiers: Boolean, classifiers: Vector[String], mavenProfiles: Vector[String], scalaOrganization: String, scalaVersion: String, authenticationByRepositoryId: Vector[(String, coursier.core.Authentication)], credentials: Seq[coursier.credentials.Credentials], logger: coursier.cache.CacheLogger, cache: java.io.File): CoursierConfiguration = new CoursierConfiguration(Option(log), resolvers, reorderResolvers, parallelDownloads, maxIterations, Option(sbtScalaOrganization), Option(sbtScalaVersion), sbtScalaJars, interProjectDependencies, excludeDependencies, fallbackDependencies, autoScalaLibrary, hasClassifiers, classifiers, mavenProfiles, Option(scalaOrganization), Option(scalaVersion), authenticationByRepositoryId, credentials, Option(logger), Option(cache))
-}
diff --git a/modules/lm-coursier/src/main/contraband/lm-coursier.json b/modules/lm-coursier/src/main/contraband/lm-coursier.json
deleted file mode 100644
index 7e46fe61c..000000000
--- a/modules/lm-coursier/src/main/contraband/lm-coursier.json
+++ /dev/null
@@ -1,139 +0,0 @@
-{
-  "codecNamespace": "coursier.lmcoursier",
-  "types": [
-    {
-      "name": "CoursierConfiguration",
-      "namespace": "coursier.lmcoursier",
-      "target": "Scala",
-      "type": "record",
-      "fields": [
-        { 
-          "name": "log",
-          "type": "xsbti.Logger?",
-          "default": "None",
-          "since": "0.0.1"
-        },
-        { 
-          "name": "resolvers",
-          "type": "sbt.librarymanagement.Resolver*",
-          "default": "sbt.librarymanagement.Resolver.defaults",
-          "since": "0.0.1"
-        },
-        {
-          "name": "reorderResolvers",
-          "type": "Boolean",
-          "default": "true",
-          "since": "0.0.1"
-        },
-        {
-          "name": "parallelDownloads",
-          "type": "Int",
-          "default": "6",
-          "since": "0.0.1"
-        },
-        {
-          "name": "maxIterations",
-          "type": "Int",
-          "default": "100",
-          "since": "0.0.1"
-        },
-        {
-          "name": "sbtScalaOrganization",
-          "type": "String?",
-          "default": "None",
-          "since": "0.0.1"
-        },
-        {
-          "name": "sbtScalaVersion",
-          "type": "String?",
-          "default": "None",
-          "since": "0.0.1"
-        },
-        {
-          "name": "sbtScalaJars",
-          "type": "java.io.File*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "interProjectDependencies",
-          "type": "coursier.core.Project*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "excludeDependencies",
-          "type": "(String, String)*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "fallbackDependencies",
-          "type": "coursier.lmcoursier.FallbackDependency*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "autoScalaLibrary",
-          "type": "Boolean",
-          "default": "true",
-          "since": "0.0.1"
-        },
-        {
-          "name": "hasClassifiers",
-          "type": "Boolean",
-          "default": "false",
-          "since": "0.0.1"
-        },
-        {
-          "name": "classifiers",
-          "type": "String*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "mavenProfiles",
-          "type": "String*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "scalaOrganization",
-          "type": "String?",
-          "default": "None",
-          "since": "0.0.1"
-        },
-        {
-          "name": "scalaVersion",
-          "type": "String?",
-          "default": "None",
-          "since": "0.0.1"
-        },
-        {
-          "name": "authenticationByRepositoryId",
-          "type": "(String, coursier.core.Authentication)*",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "credentials",
-          "type": "Seq[coursier.credentials.Credentials]",
-          "default": "Vector.empty",
-          "since": "0.0.1"
-        },
-        {
-          "name": "logger",
-          "type": "coursier.cache.CacheLogger?",
-          "default": "None",
-          "since": "0.0.1"
-        },
-        {
-          "name": "cache",
-          "type": "java.io.File?",
-          "default": "None",
-          "since": "0.0.1"
-        }
-      ]
-    }
-  ]
-}
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierModuleSettings.scala b/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierModuleSettings.scala
deleted file mode 100644
index a4d45fb3f..000000000
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierModuleSettings.scala
+++ /dev/null
@@ -1,5 +0,0 @@
-package coursier.lmcoursier
-
-import sbt.librarymanagement.ModuleSettings
-
-case class CoursierModuleSettings() extends ModuleSettings
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Resolvers.scala b/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Resolvers.scala
deleted file mode 100644
index ff65c2688..000000000
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Resolvers.scala
+++ /dev/null
@@ -1,51 +0,0 @@
-package coursier.lmcoursier
-
-import sbt.librarymanagement.{ MavenRepository, Resolver, URLRepository }
-
-object Resolvers {
-
-  private val slowReposBase = Seq(
-    "https://repo.typesafe.com/",
-    "https://repo.scala-sbt.org/",
-    "http://repo.typesafe.com/",
-    "http://repo.scala-sbt.org/"
-  )
-
-  private val fastReposBase = Seq(
-    "http://repo1.maven.org/",
-    "https://repo1.maven.org/"
-  )
-
-  private def url(res: Resolver): Option[String] =
-    res match {
-      case m: MavenRepository =>
-        Some(m.root)
-      case u: URLRepository =>
-        u.patterns.artifactPatterns.headOption
-          .orElse(u.patterns.ivyPatterns.headOption)
-      case _ =>
-        None
-    }
-
-  private def filterResolvers(bases: Seq[String],
-                              resolvers: Seq[(Resolver, Option[String])]): Seq[Resolver] =
-    resolvers
-      .filter(tuple => tuple._2.exists(url => bases.exists(base => url.startsWith(base))))
-      .map(_._1)
-
-  def reorder(resolvers: Seq[Resolver]): Seq[Resolver] = {
-
-    val byUrl = resolvers.map(r => (r, url(r)))
-
-    val fast = filterResolvers(fastReposBase, byUrl)
-    val slow = filterResolvers(slowReposBase, byUrl)
-    val rest = resolvers.diff(fast).diff(slow)
-
-    val reordered = fast ++ rest ++ slow
-    assert(reordered.size == resolvers.size,
-           "Reordered resolvers should be the same size as the unordered ones.")
-
-    reordered
-  }
-
-}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala
new file mode 100644
index 000000000..c7a08440c
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierConfiguration.scala
@@ -0,0 +1,131 @@
+/**
+ * This code is generated using [[http://www.scala-sbt.org/contraband/ sbt-contraband]].
+ */
+
+// DO NOT EDIT MANUALLY
+package lmcoursier
+final class CoursierConfiguration private (
+  val log: Option[xsbti.Logger],
+  val resolvers: Vector[sbt.librarymanagement.Resolver],
+  val parallelDownloads: Int,
+  val maxIterations: Int,
+  val sbtScalaOrganization: Option[String],
+  val sbtScalaVersion: Option[String],
+  val sbtScalaJars: Vector[java.io.File],
+  val interProjectDependencies: Vector[lmcoursier.definitions.Project],
+  val excludeDependencies: Vector[(String, String)],
+  val fallbackDependencies: Vector[lmcoursier.FallbackDependency],
+  val autoScalaLibrary: Boolean,
+  val hasClassifiers: Boolean,
+  val classifiers: Vector[String],
+  val mavenProfiles: Vector[String],
+  val scalaOrganization: Option[String],
+  val scalaVersion: Option[String],
+  val authenticationByRepositoryId: Vector[(String, lmcoursier.definitions.Authentication)],
+  val credentials: Seq[lmcoursier.credentials.Credentials],
+  val logger: Option[lmcoursier.definitions.CacheLogger],
+  val cache: Option[java.io.File]) extends Serializable {
+  
+  private def this() = this(None, sbt.librarymanagement.Resolver.defaults, 6, 100, None, None, Vector.empty, Vector.empty, Vector.empty, Vector.empty, true, false, Vector.empty, Vector.empty, None, None, Vector.empty, Vector.empty, None, None)
+  
+  override def equals(o: Any): Boolean = o match {
+    case x: CoursierConfiguration => (this.log == x.log) && (this.resolvers == x.resolvers) && (this.parallelDownloads == x.parallelDownloads) && (this.maxIterations == x.maxIterations) && (this.sbtScalaOrganization == x.sbtScalaOrganization) && (this.sbtScalaVersion == x.sbtScalaVersion) && (this.sbtScalaJars == x.sbtScalaJars) && (this.interProjectDependencies == x.interProjectDependencies) && (this.excludeDependencies == x.excludeDependencies) && (this.fallbackDependencies == x.fallbackDependencies) && (this.autoScalaLibrary == x.autoScalaLibrary) && (this.hasClassifiers == x.hasClassifiers) && (this.classifiers == x.classifiers) && (this.mavenProfiles == x.mavenProfiles) && (this.scalaOrganization == x.scalaOrganization) && (this.scalaVersion == x.scalaVersion) && (this.authenticationByRepositoryId == x.authenticationByRepositoryId) && (this.credentials == x.credentials) && (this.logger == x.logger) && (this.cache == x.cache)
+    case _ => false
+  }
+  override def hashCode: Int = {
+    37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (17 + "lmcoursier.CoursierConfiguration".##) + log.##) + resolvers.##) + parallelDownloads.##) + maxIterations.##) + sbtScalaOrganization.##) + sbtScalaVersion.##) + sbtScalaJars.##) + interProjectDependencies.##) + excludeDependencies.##) + fallbackDependencies.##) + autoScalaLibrary.##) + hasClassifiers.##) + classifiers.##) + mavenProfiles.##) + scalaOrganization.##) + scalaVersion.##) + authenticationByRepositoryId.##) + credentials.##) + logger.##) + cache.##)
+  }
+  override def toString: String = {
+    "CoursierConfiguration(" + log + ", " + resolvers + ", " + parallelDownloads + ", " + maxIterations + ", " + sbtScalaOrganization + ", " + sbtScalaVersion + ", " + sbtScalaJars + ", " + interProjectDependencies + ", " + excludeDependencies + ", " + fallbackDependencies + ", " + autoScalaLibrary + ", " + hasClassifiers + ", " + classifiers + ", " + mavenProfiles + ", " + scalaOrganization + ", " + scalaVersion + ", " + authenticationByRepositoryId + ", " + credentials + ", " + logger + ", " + cache + ")"
+  }
+  private[this] def copy(log: Option[xsbti.Logger] = log, resolvers: Vector[sbt.librarymanagement.Resolver] = resolvers, parallelDownloads: Int = parallelDownloads, maxIterations: Int = maxIterations, sbtScalaOrganization: Option[String] = sbtScalaOrganization, sbtScalaVersion: Option[String] = sbtScalaVersion, sbtScalaJars: Vector[java.io.File] = sbtScalaJars, interProjectDependencies: Vector[lmcoursier.definitions.Project] = interProjectDependencies, excludeDependencies: Vector[(String, String)] = excludeDependencies, fallbackDependencies: Vector[lmcoursier.FallbackDependency] = fallbackDependencies, autoScalaLibrary: Boolean = autoScalaLibrary, hasClassifiers: Boolean = hasClassifiers, classifiers: Vector[String] = classifiers, mavenProfiles: Vector[String] = mavenProfiles, scalaOrganization: Option[String] = scalaOrganization, scalaVersion: Option[String] = scalaVersion, authenticationByRepositoryId: Vector[(String, lmcoursier.definitions.Authentication)] = authenticationByRepositoryId, credentials: Seq[lmcoursier.credentials.Credentials] = credentials, logger: Option[lmcoursier.definitions.CacheLogger] = logger, cache: Option[java.io.File] = cache): CoursierConfiguration = {
+    new CoursierConfiguration(log, resolvers, parallelDownloads, maxIterations, sbtScalaOrganization, sbtScalaVersion, sbtScalaJars, interProjectDependencies, excludeDependencies, fallbackDependencies, autoScalaLibrary, hasClassifiers, classifiers, mavenProfiles, scalaOrganization, scalaVersion, authenticationByRepositoryId, credentials, logger, cache)
+  }
+  def withLog(log: Option[xsbti.Logger]): CoursierConfiguration = {
+    copy(log = log)
+  }
+  def withLog(log: xsbti.Logger): CoursierConfiguration = {
+    copy(log = Option(log))
+  }
+  def withResolvers(resolvers: Vector[sbt.librarymanagement.Resolver]): CoursierConfiguration = {
+    copy(resolvers = resolvers)
+  }
+  def withParallelDownloads(parallelDownloads: Int): CoursierConfiguration = {
+    copy(parallelDownloads = parallelDownloads)
+  }
+  def withMaxIterations(maxIterations: Int): CoursierConfiguration = {
+    copy(maxIterations = maxIterations)
+  }
+  def withSbtScalaOrganization(sbtScalaOrganization: Option[String]): CoursierConfiguration = {
+    copy(sbtScalaOrganization = sbtScalaOrganization)
+  }
+  def withSbtScalaOrganization(sbtScalaOrganization: String): CoursierConfiguration = {
+    copy(sbtScalaOrganization = Option(sbtScalaOrganization))
+  }
+  def withSbtScalaVersion(sbtScalaVersion: Option[String]): CoursierConfiguration = {
+    copy(sbtScalaVersion = sbtScalaVersion)
+  }
+  def withSbtScalaVersion(sbtScalaVersion: String): CoursierConfiguration = {
+    copy(sbtScalaVersion = Option(sbtScalaVersion))
+  }
+  def withSbtScalaJars(sbtScalaJars: Vector[java.io.File]): CoursierConfiguration = {
+    copy(sbtScalaJars = sbtScalaJars)
+  }
+  def withInterProjectDependencies(interProjectDependencies: Vector[lmcoursier.definitions.Project]): CoursierConfiguration = {
+    copy(interProjectDependencies = interProjectDependencies)
+  }
+  def withExcludeDependencies(excludeDependencies: Vector[(String, String)]): CoursierConfiguration = {
+    copy(excludeDependencies = excludeDependencies)
+  }
+  def withFallbackDependencies(fallbackDependencies: Vector[lmcoursier.FallbackDependency]): CoursierConfiguration = {
+    copy(fallbackDependencies = fallbackDependencies)
+  }
+  def withAutoScalaLibrary(autoScalaLibrary: Boolean): CoursierConfiguration = {
+    copy(autoScalaLibrary = autoScalaLibrary)
+  }
+  def withHasClassifiers(hasClassifiers: Boolean): CoursierConfiguration = {
+    copy(hasClassifiers = hasClassifiers)
+  }
+  def withClassifiers(classifiers: Vector[String]): CoursierConfiguration = {
+    copy(classifiers = classifiers)
+  }
+  def withMavenProfiles(mavenProfiles: Vector[String]): CoursierConfiguration = {
+    copy(mavenProfiles = mavenProfiles)
+  }
+  def withScalaOrganization(scalaOrganization: Option[String]): CoursierConfiguration = {
+    copy(scalaOrganization = scalaOrganization)
+  }
+  def withScalaOrganization(scalaOrganization: String): CoursierConfiguration = {
+    copy(scalaOrganization = Option(scalaOrganization))
+  }
+  def withScalaVersion(scalaVersion: Option[String]): CoursierConfiguration = {
+    copy(scalaVersion = scalaVersion)
+  }
+  def withScalaVersion(scalaVersion: String): CoursierConfiguration = {
+    copy(scalaVersion = Option(scalaVersion))
+  }
+  def withAuthenticationByRepositoryId(authenticationByRepositoryId: Vector[(String, lmcoursier.definitions.Authentication)]): CoursierConfiguration = {
+    copy(authenticationByRepositoryId = authenticationByRepositoryId)
+  }
+  def withCredentials(credentials: Seq[lmcoursier.credentials.Credentials]): CoursierConfiguration = {
+    copy(credentials = credentials)
+  }
+  def withLogger(logger: Option[lmcoursier.definitions.CacheLogger]): CoursierConfiguration = {
+    copy(logger = logger)
+  }
+  def withLogger(logger: lmcoursier.definitions.CacheLogger): CoursierConfiguration = {
+    copy(logger = Option(logger))
+  }
+  def withCache(cache: Option[java.io.File]): CoursierConfiguration = {
+    copy(cache = cache)
+  }
+  def withCache(cache: java.io.File): CoursierConfiguration = {
+    copy(cache = Option(cache))
+  }
+}
+object CoursierConfiguration {
+  
+  def apply(): CoursierConfiguration = new CoursierConfiguration()
+  def apply(log: Option[xsbti.Logger], resolvers: Vector[sbt.librarymanagement.Resolver], parallelDownloads: Int, maxIterations: Int, sbtScalaOrganization: Option[String], sbtScalaVersion: Option[String], sbtScalaJars: Vector[java.io.File], interProjectDependencies: Vector[lmcoursier.definitions.Project], excludeDependencies: Vector[(String, String)], fallbackDependencies: Vector[lmcoursier.FallbackDependency], autoScalaLibrary: Boolean, hasClassifiers: Boolean, classifiers: Vector[String], mavenProfiles: Vector[String], scalaOrganization: Option[String], scalaVersion: Option[String], authenticationByRepositoryId: Vector[(String, lmcoursier.definitions.Authentication)], credentials: Seq[lmcoursier.credentials.Credentials], logger: Option[lmcoursier.definitions.CacheLogger], cache: Option[java.io.File]): CoursierConfiguration = new CoursierConfiguration(log, resolvers, parallelDownloads, maxIterations, sbtScalaOrganization, sbtScalaVersion, sbtScalaJars, interProjectDependencies, excludeDependencies, fallbackDependencies, autoScalaLibrary, hasClassifiers, classifiers, mavenProfiles, scalaOrganization, scalaVersion, authenticationByRepositoryId, credentials, logger, cache)
+  def apply(log: xsbti.Logger, resolvers: Vector[sbt.librarymanagement.Resolver], parallelDownloads: Int, maxIterations: Int, sbtScalaOrganization: String, sbtScalaVersion: String, sbtScalaJars: Vector[java.io.File], interProjectDependencies: Vector[lmcoursier.definitions.Project], excludeDependencies: Vector[(String, String)], fallbackDependencies: Vector[lmcoursier.FallbackDependency], autoScalaLibrary: Boolean, hasClassifiers: Boolean, classifiers: Vector[String], mavenProfiles: Vector[String], scalaOrganization: String, scalaVersion: String, authenticationByRepositoryId: Vector[(String, lmcoursier.definitions.Authentication)], credentials: Seq[lmcoursier.credentials.Credentials], logger: lmcoursier.definitions.CacheLogger, cache: java.io.File): CoursierConfiguration = new CoursierConfiguration(Option(log), resolvers, parallelDownloads, maxIterations, Option(sbtScalaOrganization), Option(sbtScalaVersion), sbtScalaJars, interProjectDependencies, excludeDependencies, fallbackDependencies, autoScalaLibrary, hasClassifiers, classifiers, mavenProfiles, Option(scalaOrganization), Option(scalaVersion), authenticationByRepositoryId, credentials, Option(logger), Option(cache))
+}
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierDependencyResolution.scala b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
similarity index 85%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierDependencyResolution.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
index 6835bf97b..b8a327682 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierDependencyResolution.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/CoursierDependencyResolution.scala
@@ -1,11 +1,13 @@
-package coursier.lmcoursier
+package lmcoursier
 
 import java.io.File
 
 import _root_.coursier.{Artifact, Organization, Resolution, organizationString}
-import _root_.coursier.core.{Classifier, Configuration, ModuleName}
-import coursier.cache.{CacheDefaults, FileCache}
+import _root_.coursier.core.{Classifier, Configuration}
+import coursier.cache.CacheDefaults
 import coursier.internal.Typelevel
+import lmcoursier.definitions.ToCoursier
+import lmcoursier.internal.{ArtifactsParams, ArtifactsRun, CoursierModuleDescriptor, InterProjectRepository, ResolutionParams, ResolutionRun, Resolvers, SbtBootJars, UpdateParams, UpdateRun}
 import sbt.internal.librarymanagement.IvySbt
 import sbt.librarymanagement._
 import sbt.util.Logger
@@ -18,21 +20,15 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
    * sbt-coursier, that was moved to this module.
    */
 
-  lazy val resolvers =
-    if (conf.reorderResolvers)
-      ResolutionParams.reorderResolvers(conf.resolvers)
-    else
-      conf.resolvers
-
   private lazy val excludeDependencies = conf
     .excludeDependencies
     .map {
       case (strOrg, strName) =>
-        (Organization(strOrg), ModuleName(strName))
+        (lmcoursier.definitions.Organization(strOrg), lmcoursier.definitions.ModuleName(strName))
     }
     .toSet
 
-  def moduleDescriptor(moduleSetting: ModuleDescriptorConfiguration): CoursierModuleDescriptor =
+  def moduleDescriptor(moduleSetting: ModuleDescriptorConfiguration): ModuleDescriptor =
     CoursierModuleDescriptor(moduleSetting, conf)
 
   def update(
@@ -72,7 +68,7 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
     val verbosityLevel = 0
 
     val ttl = CacheDefaults.ttl
-    val loggerOpt = conf.logger
+    val loggerOpt = conf.logger.map(ToCoursier.cacheLogger)
     val cache = conf.cache.getOrElse(CacheDefaults.location)
     val cachePolicies = CacheDefaults.cachePolicies
     val checksums = CacheDefaults.checksums
@@ -88,17 +84,18 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
 
     val authenticationByRepositoryId = conf.authenticationByRepositoryId.toMap
 
-    val mainRepositories = resolvers
+    val mainRepositories = conf
+      .resolvers
       .flatMap { resolver =>
-        FromSbt.repository(
+        Resolvers.repository(
           resolver,
           ivyProperties,
           log,
-          authenticationByRepositoryId.get(resolver.name)
+          authenticationByRepositoryId.get(resolver.name).map(ToCoursier.authentication)
         )
       }
 
-    val interProjectRepo = InterProjectRepository(conf.interProjectDependencies)
+    val interProjectRepo = InterProjectRepository(conf.interProjectDependencies.map(ToCoursier.project))
 
     val dependencies = module0
       .dependencies
@@ -112,12 +109,12 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
           val dep0 = dep.copy(
             exclusions = dep.exclusions ++ excludeDependencies
           )
-          (config, dep0)
+          (ToCoursier.configuration(config), ToCoursier.dependency(dep0))
       }
 
     val configGraphs = Inputs.ivyGraphs(
       Inputs.configExtends(module0.configurations)
-    )
+    ).map(_.map(ToCoursier.configuration))
 
     val typelevel = so == Typelevel.typelevelOrg
 
@@ -126,7 +123,7 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
       .withCachePolicies(cachePolicies)
       .withTtl(ttl)
       .withChecksums(checksums)
-      .withCredentials(conf.credentials)
+      .withCredentials(conf.credentials.map(ToCoursier.credentials))
 
     val resolutionParams = ResolutionParams(
       dependencies = dependencies,
@@ -135,7 +132,7 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
       autoScalaLibOpt = if (conf.autoScalaLibrary) Some((so, sv)) else None,
       mainRepositories = mainRepositories,
       parentProjectCache = Map.empty,
-      interProjectDependencies = conf.interProjectDependencies,
+      interProjectDependencies = conf.interProjectDependencies.map(ToCoursier.project),
       internalRepositories = Seq(interProjectRepo),
       sbtClassifiers = false,
       projectName = projectName,
@@ -149,7 +146,7 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
         .withTypelevel(typelevel)
     )
 
-    def artifactsParams(resolutions: Map[Set[Configuration], Resolution]) =
+    def artifactsParams(resolutions: Map[Set[Configuration], Resolution]): ArtifactsParams =
       ArtifactsParams(
         classifiers = classifiers,
         resolutions = resolutions.values.toSeq,
@@ -167,7 +164,10 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
       conf.sbtScalaJars
     )
 
-    val configs = Inputs.coursierConfigurations(module0.configurations)
+    val configs = Inputs.coursierConfigurations(module0.configurations).map {
+      case (k, l) =>
+        ToCoursier.configuration(k) -> l.map(ToCoursier.configuration)
+    }
 
     def updateParams(
       resolutions: Map[Set[Configuration], Resolution],
@@ -239,4 +239,7 @@ class CoursierDependencyResolution(conf: CoursierConfiguration) extends Dependen
 object CoursierDependencyResolution {
   def apply(configuration: CoursierConfiguration): DependencyResolution =
     DependencyResolution(new CoursierDependencyResolution(configuration))
+
+  def defaultCacheLocation: File =
+    CacheDefaults.location
 }
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/FallbackDependency.scala b/modules/lm-coursier/src/main/scala/lmcoursier/FallbackDependency.scala
similarity index 76%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/FallbackDependency.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/FallbackDependency.scala
index 5e9476cd6..8247c7f59 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/FallbackDependency.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/FallbackDependency.scala
@@ -1,8 +1,8 @@
-package coursier.lmcoursier
+package lmcoursier
 
 import java.net.URL
 
-import coursier.core.Module
+import lmcoursier.definitions.Module
 
 // FIXME Handle that via the contraband thing?
 final case class FallbackDependency(
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/FromSbt.scala b/modules/lm-coursier/src/main/scala/lmcoursier/FromSbt.scala
new file mode 100644
index 000000000..e1d465dcc
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/FromSbt.scala
@@ -0,0 +1,146 @@
+package lmcoursier
+
+import coursier.ivy.IvyXml.{mappings => ivyXmlMappings}
+
+import lmcoursier.definitions.{Attributes, Classifier, Configuration, Dependency, Info, Module, ModuleName, Organization, Project, Type}
+import sbt.internal.librarymanagement.mavenint.SbtPomExtraProperties
+import sbt.librarymanagement.{Configuration => _, MavenRepository => _, _}
+
+object FromSbt {
+
+  private def sbtModuleIdName(
+    moduleId: ModuleID,
+    scalaVersion: => String,
+    scalaBinaryVersion: => String,
+    optionalCrossVer: Boolean = false
+  ): String = {
+    val name0 = moduleId.name
+    val updatedName = CrossVersion(moduleId.crossVersion, scalaVersion, scalaBinaryVersion)
+      .fold(name0)(_(name0))
+    if (!optionalCrossVer || updatedName.length <= name0.length)
+      updatedName
+    else {
+      val suffix = updatedName.substring(name0.length)
+      if (name0.endsWith(suffix))
+        name0
+      else
+        updatedName
+    }
+  }
+
+  private def attributes(attr: Map[String, String]): Map[String, String] =
+    attr.map { case (k, v) =>
+      k.stripPrefix("e:") -> v
+    }.filter { case (k, _) =>
+      !k.startsWith(SbtPomExtraProperties.POM_INFO_KEY_PREFIX)
+    }
+
+  private def moduleVersion(
+    module: ModuleID,
+    scalaVersion: String,
+    scalaBinaryVersion: String,
+    optionalCrossVer: Boolean
+  ): (Module, String) = {
+
+    val fullName = sbtModuleIdName(module, scalaVersion, scalaBinaryVersion, optionalCrossVer)
+
+    val module0 = Module(Organization(module.organization), ModuleName(fullName), attributes(module.extraDependencyAttributes))
+    val version = module.revision
+
+    (module0, version)
+  }
+
+  def moduleVersion(
+    module: ModuleID,
+    scalaVersion: String,
+    scalaBinaryVersion: String
+  ): (Module, String) =
+    moduleVersion(module, scalaVersion, scalaBinaryVersion, optionalCrossVer = false)
+
+  def dependencies(
+    module: ModuleID,
+    scalaVersion: String,
+    scalaBinaryVersion: String,
+    optionalCrossVer: Boolean = false
+  ): Seq[(Configuration, Dependency)] = {
+
+    // TODO Warn about unsupported properties in `module`
+
+    val (module0, version) = moduleVersion(module, scalaVersion, scalaBinaryVersion, optionalCrossVer)
+
+    val dep = Dependency(
+      module0,
+      version,
+      Configuration(""),
+      exclusions = module.exclusions.map { rule =>
+        // FIXME Other `rule` fields are ignored here
+        (Organization(rule.organization), ModuleName(rule.name))
+      }.toSet,
+      Attributes(Type(""), Classifier("")),
+      optional = false,
+      transitive = module.isTransitive
+    )
+
+    val mapping = module.configurations.getOrElse("compile")
+    val allMappings = ivyXmlMappings(mapping).map {
+      case (from, to) =>
+        (Configuration(from.value), Configuration(to.value))
+    }
+
+    val attributes =
+      if (module.explicitArtifacts.isEmpty)
+        Seq(Attributes(Type(""), Classifier("")))
+      else
+        module.explicitArtifacts.map { a =>
+          Attributes(
+            `type` = Type(a.`type`),
+            classifier = a.classifier.fold(Classifier(""))(Classifier(_))
+          )
+        }
+
+    for {
+      (from, to) <- allMappings
+      attr <- attributes
+    } yield from -> dep.copy(configuration = to, attributes = attr)
+  }
+
+  def fallbackDependencies(
+    allDependencies: Seq[ModuleID],
+    scalaVersion: String,
+    scalaBinaryVersion: String
+  ): Seq[FallbackDependency] =
+    for {
+      module <- allDependencies
+      artifact <- module.explicitArtifacts
+      url <- artifact.url.toSeq
+    } yield {
+      val (module0, version) = moduleVersion(module, scalaVersion, scalaBinaryVersion)
+      FallbackDependency(module0, version, url, module.isChanging)
+    }
+
+  def project(
+    projectID: ModuleID,
+    allDependencies: Seq[ModuleID],
+    ivyConfigurations: Map[Configuration, Seq[Configuration]],
+    scalaVersion: String,
+    scalaBinaryVersion: String
+  ): Project = {
+
+    val deps = allDependencies.flatMap(dependencies(_, scalaVersion, scalaBinaryVersion))
+
+    Project(
+      Module(
+        Organization(projectID.organization),
+        ModuleName(sbtModuleIdName(projectID, scalaVersion, scalaBinaryVersion)),
+        attributes(projectID.extraDependencyAttributes)
+      ),
+      projectID.revision,
+      deps,
+      ivyConfigurations,
+      Nil,
+      None,
+      Nil,
+      Info("", "", Nil, Nil, None)
+    )
+  }
+}
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Inputs.scala b/modules/lm-coursier/src/main/scala/lmcoursier/Inputs.scala
similarity index 55%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/Inputs.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/Inputs.scala
index c2853737b..32c3af41a 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Inputs.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/Inputs.scala
@@ -1,17 +1,20 @@
-package coursier.lmcoursier
+package lmcoursier
 
-import coursier.cache.CacheUrl
-import coursier.core._
-import coursier.ivy.IvyRepository
-import coursier.maven.MavenRepository
-import sbt.librarymanagement.{InclExclRule, ModuleID}
+import coursier.ivy.IvyXml.{mappings => initialIvyXmlMappings}
+import lmcoursier.definitions.{Configuration, ModuleName, Organization}
+import sbt.librarymanagement.{CrossVersion, InclExclRule}
 import sbt.util.Logger
 
 import scala.collection.mutable
-import scala.util.Try
 
 object Inputs {
 
+  def ivyXmlMappings(mapping: String): Seq[(Configuration, Configuration)] =
+    initialIvyXmlMappings(mapping).map {
+      case (from, to) =>
+        Configuration(from.value) -> Configuration(to.value)
+    }
+
   def configExtends(configurations: Seq[sbt.librarymanagement.Configuration]): Map[Configuration, Seq[Configuration]] =
     configurations
       .map(cfg => Configuration(cfg.name) -> cfg.extendsConfigs.map(c => Configuration(c.name)))
@@ -22,7 +25,7 @@ object Inputs {
     shadedConfig: Option[(String, Configuration)] = None
   ): Map[Configuration, Set[Configuration]] = {
 
-    val configs0 = Inputs.configExtends(configurations)
+    val configs0 = configExtends(configurations)
 
     def allExtends(c: Configuration) = {
       // possibly bad complexity
@@ -43,11 +46,11 @@ object Inputs {
     }
 
     map ++ shadedConfig.toSeq.flatMap {
-      case (baseConfig, shadedConfig) =>
+      case (baseConfig, shadedConfig0) =>
         val baseConfig0 = Configuration(baseConfig)
         Seq(
-          baseConfig0 -> (map.getOrElse(baseConfig0, Set(baseConfig0)) + shadedConfig),
-          shadedConfig -> map.getOrElse(shadedConfig, Set(shadedConfig))
+          baseConfig0 -> (map.getOrElse(baseConfig0, Set(baseConfig0)) + shadedConfig0),
+          shadedConfig0 -> map.getOrElse(shadedConfig0, Set(shadedConfig0))
         )
     }
   }
@@ -107,10 +110,11 @@ object Inputs {
           log.warn(s"Unsupported exclusion rule $rule")
           anyNonSupportedExclusionRule = true
           Nil
-        } else
-          Seq(
-            (Organization(rule.organization), ModuleName(FromSbt.sbtCrossVersionName(rule.name, rule.crossVersion, sv, sbv)))
-          )
+        } else {
+          val name = CrossVersion(rule.crossVersion, sv, sbv)
+            .fold(rule.name)(_(rule.name))
+          Seq((Organization(rule.organization), ModuleName(name)))
+        }
       }
       .toSet
 
@@ -120,67 +124,4 @@ object Inputs {
     res
   }
 
-  def coursierProject(
-    projId: ModuleID,
-    dependencies: Seq[ModuleID],
-    excludeDeps: Seq[InclExclRule],
-    configurations: Seq[sbt.librarymanagement.Configuration],
-    sv: String,
-    sbv: String,
-    log: Logger
-  ): Project = {
-
-    val exclusions0 = exclusions(excludeDeps, sv, sbv, log)
-
-    val configMap = configExtends(configurations)
-
-    val proj = FromSbt.project(
-      projId,
-      dependencies,
-      configMap,
-      sv,
-      sbv
-    )
-
-    proj.copy(
-      dependencies = proj.dependencies.map {
-        case (config, dep) =>
-          (config, dep.copy(exclusions = dep.exclusions ++ exclusions0))
-      }
-    )
-  }
-
-  def withAuthenticationByHost(repo: Repository, credentials: Map[String, Authentication]): Repository = {
-
-    def httpHost(s: String) =
-      if (s.startsWith("http://") || s.startsWith("https://"))
-        Try(CacheUrl.url(s).getHost).toOption
-      else
-        None
-
-    repo match {
-      case m: MavenRepository =>
-        if (m.authentication.isEmpty)
-          httpHost(m.root).flatMap(credentials.get).fold(m) { auth =>
-            m.copy(authentication = Some(auth))
-          }
-        else
-          m
-      case i: IvyRepository =>
-        if (i.authentication.isEmpty) {
-          val base = i.pattern.chunks.takeWhile {
-            case _: coursier.ivy.Pattern.Chunk.Const => true
-            case _ => false
-          }.map(_.string).mkString
-
-          httpHost(base).flatMap(credentials.get).fold(i) { auth =>
-            i.copy(authentication = Some(auth))
-          }
-        } else
-          i
-      case _ =>
-        repo
-    }
-  }
-
 }
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/credentials/Credentials.scala b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/Credentials.scala
new file mode 100644
index 000000000..47df861d8
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/Credentials.scala
@@ -0,0 +1,23 @@
+package lmcoursier.credentials
+
+import java.io.File
+
+abstract class Credentials extends Serializable {
+  // calling this may incur I/O
+  def get(): Seq[DirectCredentials]
+}
+
+object Credentials {
+
+  def apply(): DirectCredentials = DirectCredentials()
+  def apply(host: String, username: String, password: String): DirectCredentials = DirectCredentials(host, username, password)
+  def apply(host: String, username: String, password: String, realm: Option[String]): DirectCredentials = DirectCredentials(host, username, password, realm)
+  def apply(host: String, username: String, password: String, realm: String): DirectCredentials = DirectCredentials(host, username, password, Option(realm))
+  def apply(host: String, username: String, password: String, realm: Option[String], optional: Boolean): DirectCredentials = DirectCredentials(host, username, password, realm, optional)
+  def apply(host: String, username: String, password: String, realm: String, optional: Boolean): DirectCredentials = DirectCredentials(host, username, password, Option(realm), optional)
+
+  def apply(f: File): FileCredentials =
+    FileCredentials(f.getAbsolutePath)
+  def apply(f: File, optional: Boolean): FileCredentials =
+    FileCredentials(f.getAbsolutePath, optional)
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala
new file mode 100644
index 000000000..916b340a5
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/DirectCredentials.scala
@@ -0,0 +1,100 @@
+package lmcoursier.credentials
+
+import java.net.URI
+
+import coursier.core.Authentication
+
+final class DirectCredentials private(
+  val host: String,
+  val username: String,
+  val password: String,
+  val realm: Option[String],
+  val optional: Boolean,
+  val matchHost: Boolean,
+  val httpsOnly: Boolean
+) extends Credentials {
+
+  private def this() = this("", "", "", None, true, false, true)
+  private def this(host: String, username: String, password: String) = this(host, username, password, None, true, false, true)
+  private def this(host: String, username: String, password: String, realm: Option[String]) = this(host, username, password, realm, true, false, true)
+  private def this(host: String, username: String, password: String, realm: Option[String], optional: Boolean) = this(host, username, password, realm, optional, false, true)
+
+  override def equals(o: Any): Boolean = o match {
+    case x: DirectCredentials => (this.host == x.host) && (this.username == x.username) && (this.password == x.password) && (this.realm == x.realm) && (this.optional == x.optional) && (this.matchHost == x.matchHost) && (this.httpsOnly == x.httpsOnly)
+    case _ => false
+  }
+  override def hashCode: Int = {
+    37 * (37 * (37 * (37 * (37 * (37 * (37 * (37 * (17 + "lmcoursier.credentials.DirectCredentials".##) + host.##) + username.##) + password.##) + realm.##) + optional.##) + matchHost.##) + httpsOnly.##)
+  }
+  override def toString: String = {
+    "Credentials(" + host + ", " + username + ", " + "****" + ", " + realm + ", " + optional + ", " + matchHost + ", " + httpsOnly + ")"
+  }
+  private[this] def copy(host: String = host, username: String = username, password: String = password, realm: Option[String] = realm, optional: Boolean = optional, matchHost: Boolean = matchHost, httpsOnly: Boolean = httpsOnly): DirectCredentials = {
+    new DirectCredentials(host, username, password, realm, optional, matchHost, httpsOnly)
+  }
+  def withHost(host: String): DirectCredentials = {
+    copy(host = host)
+  }
+  def withUsername(username: String): DirectCredentials = {
+    copy(username = username)
+  }
+  def withPassword(password: String): DirectCredentials = {
+    copy(password = password)
+  }
+  def withRealm(realm: Option[String]): DirectCredentials = {
+    copy(realm = realm)
+  }
+  def withRealm(realm: String): DirectCredentials = {
+    copy(realm = Option(realm))
+  }
+  def withOptional(optional: Boolean): DirectCredentials = {
+    copy(optional = optional)
+  }
+  def withMatchHost(matchHost: Boolean): DirectCredentials =
+    copy(matchHost = matchHost)
+  def withHttpsOnly(httpsOnly: Boolean): DirectCredentials =
+    copy(httpsOnly = httpsOnly)
+
+  def autoMatches(url: String, realm0: Option[String]): Boolean =
+    matchHost && {
+      val uri = new URI(url)
+      val schemeOpt = Option(uri.getScheme)
+      val hostOpt = Option(uri.getHost)
+      ((schemeOpt.contains("http") && !httpsOnly) || schemeOpt.contains("https")) &&
+        hostOpt.contains(host) &&
+        realm.forall(realm0.contains)
+    }
+
+  def matches(url: String, user: String): Boolean = {
+    val uri = new URI(url)
+    val schemeOpt = Option(uri.getScheme)
+    val hostOpt = Option(uri.getHost)
+    val userInfoOpt = Option(uri.getUserInfo)
+    // !matchHost && // ?
+    userInfoOpt.isEmpty &&
+      ((schemeOpt.contains("http") && !httpsOnly) || schemeOpt.contains("https")) &&
+      hostOpt.contains(host) &&
+      user == username
+  }
+
+  def authentication: Authentication =
+    Authentication(
+      username,
+      password,
+      realmOpt = realm,
+      optional = optional
+    )
+
+  def get(): Seq[DirectCredentials] =
+    Seq(this)
+
+}
+object DirectCredentials {
+
+  def apply(): DirectCredentials = new DirectCredentials()
+  def apply(host: String, username: String, password: String): DirectCredentials = new DirectCredentials(host, username, password)
+  def apply(host: String, username: String, password: String, realm: Option[String]): DirectCredentials = new DirectCredentials(host, username, password, realm)
+  def apply(host: String, username: String, password: String, realm: String): DirectCredentials = new DirectCredentials(host, username, password, Option(realm))
+  def apply(host: String, username: String, password: String, realm: Option[String], optional: Boolean): DirectCredentials = new DirectCredentials(host, username, password, realm, optional)
+  def apply(host: String, username: String, password: String, realm: String, optional: Boolean): DirectCredentials = new DirectCredentials(host, username, password, Option(realm), optional)
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/credentials/FileCredentials.scala b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/FileCredentials.scala
new file mode 100644
index 000000000..ab4d8e100
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/credentials/FileCredentials.scala
@@ -0,0 +1,92 @@
+package lmcoursier.credentials
+
+import java.io.{File, FileInputStream}
+import java.util.Properties
+
+import scala.collection.JavaConverters._
+
+final class FileCredentials private(
+  val path: String,
+  val optional: Boolean
+) extends Credentials {
+
+  private def this(path: String) = this(path, true)
+
+  override def equals(o: Any): Boolean = o match {
+    case x: FileCredentials => (this.path == x.path) && (this.optional == x.optional)
+    case _ => false
+  }
+  override def hashCode: Int = {
+    37 * (37 * (37 * (17 + "lmcoursier.credentials.CredentialFile".##) + path.##) + optional.##)
+  }
+  override def toString: String = {
+    "CredentialFile(" + path + ", " + optional + ")"
+  }
+  private[this] def copy(path: String = path, optional: Boolean = optional): FileCredentials = {
+    new FileCredentials(path, optional)
+  }
+  def withPath(path: String): FileCredentials = {
+    copy(path = path)
+  }
+  def withOptional(optional: Boolean): FileCredentials = {
+    copy(optional = optional)
+  }
+
+  def get(): Seq[DirectCredentials] = {
+
+    val f = new File(path)
+
+    if (f.isFile) {
+
+      val props = new Properties
+
+      var fis: FileInputStream = null
+      try {
+        fis = new FileInputStream(f)
+        props.load(fis)
+      } finally {
+        if (fis != null)
+          fis.close()
+      }
+
+      val userProps = props
+        .propertyNames()
+        .asScala
+        .map(_.asInstanceOf[String])
+        .filter(_.endsWith(".username"))
+        .toVector
+
+      userProps.map { userProp =>
+        val prefix = userProp.stripSuffix(".username")
+
+        val user = props.getProperty(userProp)
+        val password = Option(props.getProperty(s"$prefix.password")).getOrElse {
+          throw new Exception(s"Property $prefix.password not found in $path")
+        }
+
+        val host = Option(props.getProperty(s"$prefix.host")).getOrElse {
+          throw new Exception(s"Property $prefix.host not found in $path")
+        }
+
+        val realmOpt = Option(props.getProperty(s"$prefix.realm")) // filter if empty?
+
+        val matchHost = Option(props.getProperty(s"$prefix.auto")).fold(false)(_.toBoolean)
+        val httpsOnly = Option(props.getProperty(s"$prefix.https-only")).fold(true)(_.toBoolean)
+
+        DirectCredentials(host, user, password)
+          .withRealm(realmOpt)
+          .withMatchHost(matchHost)
+          .withHttpsOnly(httpsOnly)
+      }
+
+    } else if (optional)
+      Nil
+    else
+      throw new Exception(s"Credential file $path not found")
+  }
+}
+object FileCredentials {
+
+  def apply(path: String): FileCredentials = new FileCredentials(path)
+  def apply(path: String, optional: Boolean): FileCredentials = new FileCredentials(path, optional)
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Attributes.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Attributes.scala
new file mode 100644
index 000000000..2daf0c1d1
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Attributes.scala
@@ -0,0 +1,35 @@
+package lmcoursier.definitions
+
+final class Attributes private (
+  val `type`: Type,
+  val classifier: Classifier
+) {
+
+  override def equals(obj: Any): Boolean =
+    obj match {
+      case other: Attributes =>
+        `type` == other.`type` && classifier == other.classifier
+      case _ => false
+    }
+  override def hashCode(): Int =
+    37 * (37 * (37 * (17 + "lmcoursier.definitions.Attributes".##) + `type`.##) + classifier.##)
+  override def toString: String =
+    s"Attributes(${`type`}, $classifier)"
+
+  private def copy(
+    `type`: Type = `type`,
+    classifier: Classifier = classifier
+  ): Attributes =
+    new Attributes(`type`, classifier)
+
+  def withType(`type`: Type): Attributes =
+    copy(`type` = `type`)
+  def withClassifier(classifier: Classifier): Attributes =
+    copy(classifier = classifier)
+
+}
+
+object Attributes {
+  def apply(`type`: Type, classifier: Classifier): Attributes =
+    new Attributes(`type`, classifier)
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Authentication.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Authentication.scala
new file mode 100644
index 000000000..a03103abd
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Authentication.scala
@@ -0,0 +1,11 @@
+package lmcoursier.definitions
+
+final case class Authentication(
+  user: String,
+  password: String,
+  optional: Boolean = false,
+  realmOpt: Option[String] = None
+) {
+  override def toString: String =
+    s"Authentication($user, *******, $optional, $realmOpt)"
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/CacheLogger.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/CacheLogger.scala
new file mode 100644
index 000000000..8e9a5e265
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/CacheLogger.scala
@@ -0,0 +1,29 @@
+package lmcoursier.definitions
+
+abstract class CacheLogger {
+  def foundLocally(url: String): Unit = {}
+
+  def downloadingArtifact(url: String): Unit = {}
+
+  def downloadProgress(url: String, downloaded: Long): Unit = {}
+
+  def downloadedArtifact(url: String, success: Boolean): Unit = {}
+  def checkingUpdates(url: String, currentTimeOpt: Option[Long]): Unit = {}
+  def checkingUpdatesResult(url: String, currentTimeOpt: Option[Long], remoteTimeOpt: Option[Long]): Unit = {}
+
+  def downloadLength(url: String, totalLength: Long, alreadyDownloaded: Long, watching: Boolean): Unit = {}
+
+  def gettingLength(url: String): Unit = {}
+  def gettingLengthResult(url: String, length: Option[Long]): Unit = {}
+
+  def removedCorruptFile(url: String, reason: Option[String]): Unit = {}
+
+  // sizeHint: estimated # of artifacts to be downloaded (doesn't include side stuff like checksums)
+  def init(sizeHint: Option[Int] = None): Unit = {}
+  def stop(): Unit = {}
+}
+
+object CacheLogger {
+  def nop: CacheLogger =
+    new CacheLogger {}
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Classifier.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Classifier.scala
new file mode 100644
index 000000000..d3720859a
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Classifier.scala
@@ -0,0 +1,3 @@
+package lmcoursier.definitions
+
+final case class Classifier(value: String) extends AnyVal
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Configuration.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Configuration.scala
new file mode 100644
index 000000000..378605c85
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Configuration.scala
@@ -0,0 +1,3 @@
+package lmcoursier.definitions
+
+final case class Configuration(value: String) extends AnyVal
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Dependency.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Dependency.scala
new file mode 100644
index 000000000..21a35b6dd
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Dependency.scala
@@ -0,0 +1,14 @@
+package lmcoursier.definitions
+
+final case class Dependency(
+  module: Module,
+  version: String,
+  configuration: Configuration,
+  exclusions: Set[(Organization, ModuleName)],
+
+  // Maven-specific
+  attributes: Attributes,
+  optional: Boolean,
+
+  transitive: Boolean
+)
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Extension.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Extension.scala
new file mode 100644
index 000000000..1730c5810
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Extension.scala
@@ -0,0 +1,3 @@
+package lmcoursier.definitions
+
+final case class Extension(value: String) extends AnyVal
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Info.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Info.scala
new file mode 100644
index 000000000..a6d2897d0
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Info.scala
@@ -0,0 +1,26 @@
+package lmcoursier.definitions
+
+final case class Info(
+  description: String,
+  homePage: String,
+  licenses: Seq[(String, Option[String])],
+  developers: Seq[Info.Developer],
+  publication: Option[Info.DateTime]
+)
+
+object Info {
+  final case class Developer(
+    id: String,
+    name: String,
+    url: String
+  )
+
+  final case class DateTime(
+    year: Int,
+    month: Int,
+    day: Int,
+    hour: Int,
+    minute: Int,
+    second: Int
+  )
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Module.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Module.scala
new file mode 100644
index 000000000..09ec6b6ea
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Module.scala
@@ -0,0 +1,7 @@
+package lmcoursier.definitions
+
+final case class Module(
+  organization: Organization,
+  name: ModuleName,
+  attributes: Map[String, String]
+)
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ModuleName.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ModuleName.scala
new file mode 100644
index 000000000..c29d972cf
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ModuleName.scala
@@ -0,0 +1,3 @@
+package lmcoursier.definitions
+
+final case class ModuleName(value: String) extends AnyVal
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Organization.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Organization.scala
new file mode 100644
index 000000000..9ef788eb7
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Organization.scala
@@ -0,0 +1,3 @@
+package lmcoursier.definitions
+
+final case class Organization(value: String) extends AnyVal
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Project.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Project.scala
new file mode 100644
index 000000000..68af2a012
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Project.scala
@@ -0,0 +1,12 @@
+package lmcoursier.definitions
+
+final case class Project(
+  module: Module,
+  version: String,
+  dependencies: Seq[(Configuration, Dependency)],
+  configurations: Map[Configuration, Seq[Configuration]],
+  properties: Seq[(String, String)],
+  packagingOpt: Option[Type],
+  publications: Seq[(Configuration, Publication)],
+  info: Info
+)
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Publication.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Publication.scala
new file mode 100644
index 000000000..0f1b938f8
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Publication.scala
@@ -0,0 +1,8 @@
+package lmcoursier.definitions
+
+final case class Publication(
+  name: String,
+  `type`: Type,
+  ext: Extension,
+  classifier: Classifier
+)
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
new file mode 100644
index 000000000..3221c01c4
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/ToCoursier.scala
@@ -0,0 +1,148 @@
+package lmcoursier.definitions
+
+import lmcoursier.credentials.{Credentials, DirectCredentials, FileCredentials}
+
+// TODO Make private[lmcoursier]
+// private[coursier]
+object ToCoursier {
+
+  def configuration(configuration: Configuration): coursier.core.Configuration =
+    coursier.core.Configuration(configuration.value)
+
+  private def attributes(attributes: Attributes): coursier.core.Attributes =
+    coursier.core.Attributes(
+      coursier.core.Type(attributes.`type`.value),
+      coursier.core.Classifier(attributes.classifier.value)
+    )
+
+  def publication(publication: Publication): coursier.core.Publication =
+    coursier.core.Publication(
+      publication.name,
+      coursier.core.Type(publication.`type`.value),
+      coursier.core.Extension(publication.ext.value),
+      coursier.core.Classifier(publication.classifier.value)
+    )
+
+  def authentication(authentication: Authentication): coursier.core.Authentication =
+    coursier.core.Authentication(
+      authentication.user,
+      authentication.password,
+      authentication.optional,
+      authentication.realmOpt
+    )
+
+  def module(module: Module): coursier.core.Module =
+    coursier.core.Module(
+      coursier.core.Organization(module.organization.value),
+      coursier.core.ModuleName(module.name.value),
+      module.attributes
+    )
+
+  def dependency(dependency: Dependency): coursier.core.Dependency =
+    coursier.core.Dependency(
+      module(dependency.module),
+      dependency.version,
+      configuration(dependency.configuration),
+      dependency.exclusions.map {
+        case (org, name) =>
+          (coursier.core.Organization(org.value), coursier.core.ModuleName(name.value))
+      },
+      attributes(dependency.attributes),
+      dependency.optional,
+      dependency.transitive
+    )
+
+  def project(project: Project): coursier.core.Project =
+    coursier.core.Project(
+      module(project.module),
+      project.version,
+      project.dependencies.map {
+        case (conf, dep) =>
+          configuration(conf) -> dependency(dep)
+      },
+      project.configurations.map {
+        case (k, l) =>
+          configuration(k) -> l.map(configuration)
+      },
+      None,
+      Nil,
+      project.properties,
+      Nil,
+      None,
+      None,
+      project.packagingOpt.map(t => coursier.core.Type(t.value)),
+      relocated = false,
+      None,
+      project.publications.map {
+        case (conf, pub) =>
+          configuration(conf) -> publication(pub)
+      },
+      coursier.core.Info(
+        project.info.description,
+        project.info.homePage,
+        project.info.licenses,
+        project.info.developers.map { dev =>
+          coursier.core.Info.Developer(
+            dev.id,
+            dev.name,
+            dev.url
+          )
+        },
+        project.info.publication.map { dt =>
+          coursier.core.Versions.DateTime(
+            dt.year,
+            dt.month,
+            dt.day,
+            dt.hour,
+            dt.minute,
+            dt.second
+          )
+        }
+      )
+    )
+
+  def credentials(credentials: Credentials): coursier.credentials.Credentials =
+    credentials match {
+      case d: DirectCredentials =>
+        coursier.credentials.DirectCredentials()
+          .withHost(d.host)
+          .withUsername(d.username)
+          .withPassword(d.password)
+          .withRealm(d.realm)
+          .withOptional(d.optional)
+          .withMatchHost(d.matchHost)
+          .withHttpsOnly(d.httpsOnly)
+      case f: FileCredentials =>
+        coursier.credentials.FileCredentials(f.path)
+          .withOptional(f.optional)
+    }
+
+  def cacheLogger(logger: CacheLogger): coursier.cache.CacheLogger =
+    new coursier.cache.CacheLogger {
+      override def foundLocally(url: String): Unit =
+        logger.foundLocally(url)
+      override def downloadingArtifact(url: String): Unit =
+        logger.downloadingArtifact(url)
+      override def downloadProgress(url: String, downloaded: Long): Unit =
+        logger.downloadProgress(url, downloaded)
+      override def downloadedArtifact(url: String, success: Boolean): Unit =
+        logger.downloadedArtifact(url, success)
+      override def checkingUpdates(url: String, currentTimeOpt: Option[Long]): Unit =
+        logger.checkingUpdates(url, currentTimeOpt)
+      override def checkingUpdatesResult(url: String, currentTimeOpt: Option[Long], remoteTimeOpt: Option[Long]): Unit =
+        logger.checkingUpdatesResult(url, currentTimeOpt, remoteTimeOpt)
+      override def downloadLength(url: String, totalLength: Long, alreadyDownloaded: Long, watching: Boolean): Unit =
+        logger.downloadLength(url, totalLength, alreadyDownloaded, watching)
+      override def gettingLength(url: String): Unit =
+        logger.gettingLength(url)
+      override def gettingLengthResult(url: String, length: Option[Long]): Unit =
+        logger.gettingLengthResult(url, length)
+      override def removedCorruptFile(url: String, reason: Option[String]): Unit =
+        logger.removedCorruptFile(url, reason)
+      override def init(sizeHint: Option[Int] = None): Unit =
+        logger.init(sizeHint)
+      override def stop(): Unit =
+        logger.stop()
+    }
+
+}
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Type.scala b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Type.scala
new file mode 100644
index 000000000..1e6d8e8a8
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/definitions/Type.scala
@@ -0,0 +1,3 @@
+package lmcoursier.definitions
+
+final case class Type(value: String) extends AnyVal
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ArtifactsParams.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ArtifactsParams.scala
similarity index 88%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/ArtifactsParams.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/ArtifactsParams.scala
index 055524408..d4a64e419 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ArtifactsParams.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ArtifactsParams.scala
@@ -1,9 +1,10 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import coursier.cache.{CacheLogger, FileCache}
 import coursier.core.{Classifier, Resolution}
 import coursier.util.Task
 
+// private[coursier]
 final case class ArtifactsParams(
   classifiers: Option[Seq[Classifier]],
   resolutions: Seq[Resolution],
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ArtifactsRun.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ArtifactsRun.scala
similarity index 93%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/ArtifactsRun.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/ArtifactsRun.scala
index 18ceebfc9..32a3b8a86 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ArtifactsRun.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ArtifactsRun.scala
@@ -1,13 +1,14 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import java.io.File
 
 import coursier.Artifact
+import coursier.cache.internal.ThreadUtil
 import coursier.cache.loggers.{FallbackRefreshDisplay, ProgressBarRefreshDisplay, RefreshLogger}
 import coursier.core.Type
-import coursier.util.Sync
 import sbt.util.Logger
 
+// private[coursier]
 object ArtifactsRun {
 
   def artifacts(
@@ -28,7 +29,7 @@ object ArtifactsRun {
         else
           ""
 
-      Sync.withFixedThreadPool(params.parallel) { pool =>
+      ThreadUtil.withFixedThreadPool(params.parallel) { pool =>
 
         coursier.Artifacts()
           .withResolutions(params.resolutions)
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierModuleDescriptor.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/CoursierModuleDescriptor.scala
similarity index 76%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierModuleDescriptor.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/CoursierModuleDescriptor.scala
index f30bf9732..0644119d6 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/CoursierModuleDescriptor.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/CoursierModuleDescriptor.scala
@@ -1,8 +1,9 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
+import lmcoursier.CoursierConfiguration
 import sbt.librarymanagement._
 
-final case class CoursierModuleDescriptor(
+private[lmcoursier] final case class CoursierModuleDescriptor(
   descriptor: ModuleDescriptorConfiguration,
   conf: CoursierConfiguration
 ) extends ModuleDescriptor {
diff --git a/modules/lm-coursier/src/main/scala/lmcoursier/internal/CoursierModuleSettings.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/CoursierModuleSettings.scala
new file mode 100644
index 000000000..badad3183
--- /dev/null
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/CoursierModuleSettings.scala
@@ -0,0 +1,5 @@
+package lmcoursier.internal
+
+import sbt.librarymanagement.ModuleSettings
+
+private[lmcoursier] case class CoursierModuleSettings() extends ModuleSettings
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/InterProjectRepository.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/InterProjectRepository.scala
similarity index 93%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/InterProjectRepository.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/InterProjectRepository.scala
index 153821df5..fbb3ad218 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/InterProjectRepository.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/InterProjectRepository.scala
@@ -1,8 +1,9 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import coursier.core._
 import coursier.util.{EitherT, Monad}
 
+// private[coursier]
 final case class InterProjectRepository(projects: Seq[Project]) extends Repository {
 
   private val map = projects
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Lock.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/Lock.scala
similarity index 78%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/Lock.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/Lock.scala
index fd5e96ed3..6100302ed 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/Lock.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/Lock.scala
@@ -1,6 +1,6 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
-object Lock {
+private[lmcoursier] object Lock {
 
   // Wrap blocks downloading stuff (resolution / artifact downloads) in lock.synchronized.
   // Downloads are already parallel, no need to parallelize further, and this results in
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ResolutionParams.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala
similarity index 67%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/ResolutionParams.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala
index 66de7a12e..69e807d79 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ResolutionParams.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionParams.scala
@@ -1,13 +1,15 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import java.io.File
 
 import coursier.cache.{CacheLogger, FileCache}
 import coursier.ProjectCache
 import coursier.core._
+import lmcoursier.FallbackDependency
+import lmcoursier.definitions.ToCoursier
 import coursier.util.{InMemoryRepository, Task}
-import sbt.librarymanagement.{Resolver, URLRepository}
 
+// private[coursier]
 final case class ResolutionParams(
   dependencies: Seq[(Configuration, Dependency)],
   fallbackDependencies: Seq[FallbackDependency],
@@ -31,7 +33,7 @@ final case class ResolutionParams(
     else {
       val map = fallbackDependencies.map {
         case FallbackDependency(mod, ver, url, changing) =>
-          (mod, ver) -> ((url, changing))
+          (ToCoursier.module(mod), ver) -> ((url, changing))
       }.toMap
 
       Seq(
@@ -67,6 +69,7 @@ final case class ResolutionParams(
 
 }
 
+// private[coursier]
 object ResolutionParams {
 
   private lazy val m = {
@@ -99,40 +102,4 @@ object ResolutionParams {
     ) ++ sys.props
   }
 
-  private val slowReposBase = Seq(
-    "https://repo.typesafe.com/",
-    "https://repo.scala-sbt.org/",
-    "http://repo.typesafe.com/",
-    "http://repo.scala-sbt.org/"
-  )
-
-  private val fastReposBase = Seq(
-    "http://repo1.maven.org/",
-    "https://repo1.maven.org/"
-  )
-
-  private def url(res: Resolver): Option[String] =
-    res match {
-      case m: sbt.librarymanagement.MavenRepository =>
-        Some(m.root)
-      case u: URLRepository =>
-        u.patterns.artifactPatterns.headOption
-          .orElse(u.patterns.ivyPatterns.headOption)
-      case _ =>
-        None
-    }
-
-  private def fastRepo(res: Resolver): Boolean =
-    url(res).exists(u => fastReposBase.exists(u.startsWith))
-
-  private def slowRepo(res: Resolver): Boolean =
-    url(res).exists(u => slowReposBase.exists(u.startsWith))
-
-  def reorderResolvers(resolvers: Seq[Resolver]): Seq[Resolver] =
-    if (resolvers.exists(fastRepo) && resolvers.exists(slowRepo)) {
-      val (slow, other) = resolvers.partition(slowRepo)
-      other ++ slow
-    } else
-      resolvers
-
 }
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ResolutionRun.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala
similarity index 95%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/ResolutionRun.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala
index 15bbc7d9a..4a7edf6f2 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ResolutionRun.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/ResolutionRun.scala
@@ -1,16 +1,17 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
+import coursier.cache.internal.ThreadUtil
 import coursier.{Resolution, Resolve}
 import coursier.cache.loggers.{FallbackRefreshDisplay, ProgressBarRefreshDisplay, RefreshLogger}
 import coursier.core._
 import coursier.ivy.IvyRepository
 import coursier.maven.MavenRepository
-import coursier.util.Sync
 import sbt.util.Logger
 
+// private[coursier]
 object ResolutionRun {
 
-  def resolution(
+  private def resolution(
     params: ResolutionParams,
     verbosityLevel: Int,
     log: Logger,
@@ -63,7 +64,7 @@ object ResolutionRun {
     if (verbosityLevel >= 2)
       log.info(initialMessage)
 
-    Sync.withFixedThreadPool(params.parallel) { pool =>
+    ThreadUtil.withFixedThreadPool(params.parallel) { pool =>
 
       Resolve()
         .withDependencies(
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/FromSbt.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/Resolvers.scala
similarity index 53%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/FromSbt.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/Resolvers.scala
index 0dcbd5f82..f1cd08cb7 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/FromSbt.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/Resolvers.scala
@@ -1,185 +1,18 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import coursier.ivy.IvyRepository
-import coursier.ivy.IvyXml.{mappings => ivyXmlMappings}
 import java.net.MalformedURLException
+
 import coursier.cache.CacheUrl
-import coursier.{Attributes, Dependency, Module}
-import coursier.core._
+import coursier.core.{Authentication, Repository}
 import coursier.maven.MavenRepository
 import org.apache.ivy.plugins.resolver.IBiblioResolver
-import sbt.internal.librarymanagement.mavenint.SbtPomExtraProperties
 import sbt.librarymanagement.{Configuration => _, MavenRepository => _, _}
 import sbt.util.Logger
+
 import scala.collection.JavaConverters._
 
-object FromSbt {
-
-  def sbtModuleIdName(
-    moduleId: ModuleID,
-    scalaVersion: => String,
-    scalaBinaryVersion: => String,
-    optionalCrossVer: Boolean = false
-  ): String = {
-    val name0 = moduleId.name
-    val updatedName = sbtCrossVersionName(name0, moduleId.crossVersion, scalaVersion, scalaBinaryVersion)
-    if (!optionalCrossVer || updatedName.length <= name0.length)
-      updatedName
-    else {
-      val suffix = updatedName.substring(name0.length)
-      if (name0.endsWith(suffix))
-        name0
-      else
-        updatedName
-    }
-  }
-
-  def sbtCrossVersionName(
-    name: String,
-    crossVersion: CrossVersion,
-    scalaVersion: => String,
-    scalaBinaryVersion: => String
-  ): String =
-    CrossVersion(crossVersion, scalaVersion, scalaBinaryVersion)
-      .fold(name)(_(name))
-
-  def attributes(attr: Map[String, String]): Map[String, String] =
-    attr.map { case (k, v) =>
-      k.stripPrefix("e:") -> v
-    }.filter { case (k, _) =>
-      !k.startsWith(SbtPomExtraProperties.POM_INFO_KEY_PREFIX)
-    }
-
-  def moduleVersion(
-    module: ModuleID,
-    scalaVersion: String,
-    scalaBinaryVersion: String,
-    optionalCrossVer: Boolean = false
-  ): (Module, String) = {
-
-    val fullName = sbtModuleIdName(module, scalaVersion, scalaBinaryVersion, optionalCrossVer)
-
-    val module0 = Module(Organization(module.organization), ModuleName(fullName), FromSbt.attributes(module.extraDependencyAttributes))
-    val version = module.revision
-
-    (module0, version)
-  }
-
-  def dependencies(
-    module: ModuleID,
-    scalaVersion: String,
-    scalaBinaryVersion: String,
-    optionalCrossVer: Boolean = false
-  ): Seq[(Configuration, Dependency)] = {
-
-    // TODO Warn about unsupported properties in `module`
-
-    val (module0, version) = moduleVersion(module, scalaVersion, scalaBinaryVersion, optionalCrossVer)
-
-    val dep = Dependency(
-      module0,
-      version,
-      exclusions = module.exclusions.map { rule =>
-        // FIXME Other `rule` fields are ignored here
-        (Organization(rule.organization), ModuleName(rule.name))
-      }.toSet,
-      transitive = module.isTransitive
-    )
-
-    val mapping = module.configurations.getOrElse("compile")
-    val allMappings = ivyXmlMappings(mapping)
-
-    val attributes =
-      if (module.explicitArtifacts.isEmpty)
-        Seq(Attributes(Type.empty, Classifier.empty))
-      else
-        module.explicitArtifacts.map { a =>
-          Attributes(
-            `type` = Type(a.`type`),
-            classifier = a.classifier.fold(Classifier.empty)(Classifier(_))
-          )
-        }
-
-    for {
-      (from, to) <- allMappings
-      attr <- attributes
-    } yield from -> dep.copy(configuration = to, attributes = attr)
-  }
-
-  def fallbackDependencies(
-    allDependencies: Seq[ModuleID],
-    scalaVersion: String,
-    scalaBinaryVersion: String
-  ): Seq[FallbackDependency] =
-    for {
-      module <- allDependencies
-      artifact <- module.explicitArtifacts
-      url <- artifact.url.toSeq
-    } yield {
-      val (module0, version) = moduleVersion(module, scalaVersion, scalaBinaryVersion)
-      FallbackDependency(module0, version, url, module.isChanging)
-    }
-
-  def sbtClassifiersProject(
-    cm: GetClassifiersModule,
-    scalaVersion: String,
-    scalaBinaryVersion: String
-  ) = {
-
-    val p = FromSbt.project(
-      cm.id,
-      cm.dependencies,
-      cm.configurations.map(cfg => Configuration(cfg.name) -> cfg.extendsConfigs.map(c => Configuration(c.name))).toMap,
-      scalaVersion,
-      scalaBinaryVersion
-    )
-
-    // for w/e reasons, the dependencies sometimes don't land in the right config above
-    // this is a loose attempt at fixing that
-    cm.configurations match {
-      case Seq(cfg) =>
-        p.copy(
-          dependencies = p.dependencies.map {
-            case (_, d) => (Configuration(cfg.name), d)
-          }
-        )
-      case _ =>
-        p
-    }
-  }
-
-  def project(
-    projectID: ModuleID,
-    allDependencies: Seq[ModuleID],
-    ivyConfigurations: Map[Configuration, Seq[Configuration]],
-    scalaVersion: String,
-    scalaBinaryVersion: String
-  ): Project = {
-
-    val deps = allDependencies.flatMap(dependencies(_, scalaVersion, scalaBinaryVersion))
-
-    Project(
-      Module(
-        Organization(projectID.organization),
-        ModuleName(sbtModuleIdName(projectID, scalaVersion, scalaBinaryVersion)),
-        FromSbt.attributes(projectID.extraDependencyAttributes)
-      ),
-      projectID.revision,
-      deps,
-      ivyConfigurations,
-      None,
-      Nil,
-      Nil,
-      Nil,
-      None,
-      None,
-      None,
-      relocated = false,
-      None,
-      Nil,
-      Info.empty
-    )
-  }
+object Resolvers {
 
   private def mavenCompatibleBaseOpt(patterns: Patterns): Option[String] =
     if (patterns.isMavenCompatible) {
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/SbtBootJars.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtBootJars.scala
similarity index 90%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/SbtBootJars.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtBootJars.scala
index ea9be1d6f..4e1db9cff 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/SbtBootJars.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtBootJars.scala
@@ -1,9 +1,10 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import java.io.File
 
 import coursier.core.{Module, ModuleName, Organization}
 
+// private[coursier]
 object SbtBootJars {
   def apply(
     scalaOrg: Organization,
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/SbtCoursierCache.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtCoursierCache.scala
similarity index 92%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/SbtCoursierCache.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtCoursierCache.scala
index d3b26ec6b..c4191bb35 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/SbtCoursierCache.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtCoursierCache.scala
@@ -1,10 +1,11 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import java.util.concurrent.ConcurrentHashMap
 
 import coursier.core._
 import sbt.librarymanagement.UpdateReport
 
+// private[coursier]
 class SbtCoursierCache {
 
   import SbtCoursierCache._
@@ -35,6 +36,7 @@ class SbtCoursierCache {
 
 }
 
+// private[coursier]
 object SbtCoursierCache {
 
   final case class ResolutionKey(
@@ -53,6 +55,7 @@ object SbtCoursierCache {
   )
 
 
-  private[coursier] val default = new SbtCoursierCache
+  // private[coursier]
+  val default = new SbtCoursierCache
 
 }
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ToSbt.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtUpdateReport.scala
similarity index 88%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/ToSbt.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtUpdateReport.scala
index 53143405e..e94012091 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/ToSbt.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/SbtUpdateReport.scala
@@ -1,4 +1,4 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import java.io.File
 import java.net.URL
@@ -11,7 +11,7 @@ import coursier.maven.MavenAttributes
 import sbt.librarymanagement.{Artifact => _, Configuration => _, _}
 import sbt.util.Logger
 
-object ToSbt {
+private[internal] object SbtUpdateReport {
 
   private def caching[K, V](f: K => V): K => V = {
 
@@ -27,7 +27,7 @@ object ToSbt {
       }
   }
 
-  val moduleId = caching[(Dependency, String, Map[String, String]), ModuleID] {
+  private val moduleId = caching[(Dependency, String, Map[String, String]), ModuleID] {
     case (dependency, version, extraProperties) =>
       sbt.librarymanagement.ModuleID(
         dependency.module.organization.value,
@@ -52,7 +52,7 @@ object ToSbt {
       )
   }
 
-  val artifact = caching[(Module, Map[String, String], Attributes, Artifact), sbt.librarymanagement.Artifact] {
+  private val artifact = caching[(Module, Map[String, String], Attributes, Artifact), sbt.librarymanagement.Artifact] {
     case (module, extraProperties, attr, artifact) =>
       sbt.librarymanagement.Artifact(module.name.value)
         // FIXME Get these two from publications
@@ -69,16 +69,16 @@ object ToSbt {
         .withExtraAttributes(module.attributes ++ extraProperties)
   }
 
-  val moduleReport = caching[(Dependency, Seq[(Dependency, Project)], Project, Seq[(Attributes, Artifact, Option[File])]), ModuleReport] {
+  private val moduleReport = caching[(Dependency, Seq[(Dependency, Project)], Project, Seq[(Attributes, Artifact, Option[File])]), ModuleReport] {
     case (dependency, dependees, project, artifacts) =>
 
     val sbtArtifacts = artifacts.collect {
-      case (attr, artifact, Some(file)) =>
-        (ToSbt.artifact(dependency.module, project.properties.toMap, attr, artifact), file)
+      case (attr, artifact0, Some(file)) =>
+        (artifact(dependency.module, project.properties.toMap, attr, artifact0), file)
     }
     val sbtMissingArtifacts = artifacts.collect {
-      case (attr, artifact, None) =>
-        ToSbt.artifact(dependency.module, project.properties.toMap, attr, artifact)
+      case (attr, artifact0, None) =>
+        artifact(dependency.module, project.properties.toMap, attr, artifact0)
     }
 
     val publicationDate = project.info.publication.map { dt =>
@@ -88,7 +88,7 @@ object ToSbt {
     val callers = dependees.map {
       case (dependee, dependeeProj) =>
         Caller(
-          ToSbt.moduleId(dependee, dependeeProj.version, dependeeProj.properties.toMap),
+          moduleId(dependee, dependeeProj.version, dependeeProj.properties.toMap),
           dependeeProj.configurations.keys.toVector.map(c => ConfigRef(c.value)),
           dependee.module.attributes ++ dependeeProj.properties,
           // FIXME Set better values here
@@ -100,7 +100,7 @@ object ToSbt {
     }
 
     ModuleReport(
-      ToSbt.moduleId(dependency, project.version, project.properties.toMap),
+      moduleId(dependency, project.version, project.properties.toMap),
       sbtArtifacts.toVector,
       sbtMissingArtifacts.toVector
     )
@@ -121,7 +121,7 @@ object ToSbt {
       .withCallers(callers.toVector)
   }
 
-  def moduleReports(
+  private def moduleReports(
     res: Resolution,
     classifiersOpt: Option[Seq[Classifier]],
     artifactFileOpt: (Module, String, Attributes, Artifact) => Option[File],
@@ -196,7 +196,7 @@ object ToSbt {
             (dependee, dependeeProj)
           }
 
-        ToSbt.moduleReport(
+        moduleReport(
           dep,
           dependees,
           proj,
@@ -205,7 +205,7 @@ object ToSbt {
     }
   }
 
-  def updateReport(
+  def apply(
     configDependencies: Map[Configuration, Seq[Dependency]],
     resolutions: Map[Configuration, Resolution],
     configs: Map[Configuration, Set[Configuration]],
@@ -225,7 +225,7 @@ object ToSbt {
           .distinct
         val subRes = resolutions(config).subset(configDeps)
 
-        val reports = ToSbt.moduleReports(
+        val reports = moduleReports(
           subRes,
           classifiersOpt,
           artifactFileOpt,
@@ -240,7 +240,7 @@ object ToSbt {
             // appears first in the update report, see https://github.com/coursier/coursier/issues/650
             val dep = subRes.rootDependencies.head
             val (_, proj) = subRes.projectCache(dep.moduleVersion)
-            val mod = ToSbt.moduleId(dep, proj.version, proj.properties.toMap)
+            val mod = moduleId(dep, proj.version, proj.properties.toMap)
             val (main, other) = reports.partition { r =>
               r.module.organization == mod.organization &&
                 r.module.name == mod.name &&
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/UpdateParams.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/UpdateParams.scala
similarity index 95%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/UpdateParams.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/UpdateParams.scala
index 84f7f9332..0b3b98fad 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/UpdateParams.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/UpdateParams.scala
@@ -1,9 +1,10 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import java.io.File
 
 import coursier.core._
 
+// private[coursier]
 final case class UpdateParams(
   shadedConfigOpt: Option[(String, Configuration)],
   artifacts: Map[Artifact, File],
diff --git a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/UpdateRun.scala b/modules/lm-coursier/src/main/scala/lmcoursier/internal/UpdateRun.scala
similarity index 96%
rename from modules/lm-coursier/src/main/scala/coursier/lmcoursier/UpdateRun.scala
rename to modules/lm-coursier/src/main/scala/lmcoursier/internal/UpdateRun.scala
index 61a3d4179..9965ad8ff 100644
--- a/modules/lm-coursier/src/main/scala/coursier/lmcoursier/UpdateRun.scala
+++ b/modules/lm-coursier/src/main/scala/lmcoursier/internal/UpdateRun.scala
@@ -1,4 +1,4 @@
-package coursier.lmcoursier
+package lmcoursier.internal
 
 import coursier.core.Resolution.ModuleVersion
 import coursier.core._
@@ -6,6 +6,7 @@ import coursier.util.Print
 import sbt.librarymanagement.UpdateReport
 import sbt.util.Logger
 
+// private[coursier]
 object UpdateRun {
 
   // Move back to coursier.util (in core module) after 1.0?
@@ -54,7 +55,7 @@ object UpdateRun {
     params: UpdateParams,
     verbosityLevel: Int,
     log: Logger
-  ): UpdateReport = {
+  ): UpdateReport = Lock.lock.synchronized {
 
     val configResolutions = params.res.flatMap {
       case (configs, r) =>
@@ -83,7 +84,7 @@ object UpdateRun {
       log.info(repr.split('\n').map("  " + _).mkString("\n"))
     }
 
-    ToSbt.updateReport(
+    SbtUpdateReport(
       depsByConfig,
       configResolutions,
       params.configs,
diff --git a/modules/lm-coursier/src/test/scala/coursier/lmcoursier/ResolutionSpec.scala b/modules/lm-coursier/src/test/scala/lmcoursier/ResolutionSpec.scala
similarity index 93%
rename from modules/lm-coursier/src/test/scala/coursier/lmcoursier/ResolutionSpec.scala
rename to modules/lm-coursier/src/test/scala/lmcoursier/ResolutionSpec.scala
index d034e7c11..e858a46b1 100644
--- a/modules/lm-coursier/src/test/scala/coursier/lmcoursier/ResolutionSpec.scala
+++ b/modules/lm-coursier/src/test/scala/lmcoursier/ResolutionSpec.scala
@@ -1,4 +1,4 @@
-package coursier.lmcoursier
+package lmcoursier
 
 import org.scalatest.{Matchers, PropSpec}
 import sbt.internal.librarymanagement.cross.CrossVersionUtil
@@ -152,15 +152,4 @@ final class ResolutionSpec extends PropSpec with Matchers {
 
     resolution should be('right)
   }
-
-  property("reorder fast and slow resolvers") {
-    val resolvers = Vector(
-      JavaNet2Repository,
-      Resolver.sbtPluginRepo("releases"),
-      DefaultMavenRepository
-    )
-    val engine = new CoursierDependencyResolution(CoursierConfiguration().withResolvers(resolvers))
-    engine.resolvers.last.name should be("sbt-plugin-releases")
-    engine.resolvers should have size resolvers.length
-  }
 }
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/Credentials.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/Credentials.scala
index 70223ec26..877efec55 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/Credentials.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/Credentials.scala
@@ -3,7 +3,7 @@ package coursier
 import java.io.{File, FileInputStream}
 import java.util.Properties
 
-import coursier.core.Authentication
+import lmcoursier.definitions.Authentication
 
 @deprecated("Use coursierExtraCredentials rather than coursierCredentials", "1.1.0-M14")
 sealed abstract class Credentials extends Product with Serializable {
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/ArtifactsTasks.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/ArtifactsTasks.scala
index 94b39faac..e6cee8dce 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/ArtifactsTasks.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/ArtifactsTasks.scala
@@ -1,13 +1,12 @@
 package coursier.sbtcoursiershared
 
-import coursier.core._
-import coursier.lmcoursier._
+import lmcoursier.definitions.{Classifier, Configuration, Extension, Publication, Type}
 import coursier.sbtcoursiershared.Structure._
 import sbt.librarymanagement.{Artifact => _, Configuration => _, _}
 import sbt.Def
 import sbt.Keys._
 
-object ArtifactsTasks {
+private[sbtcoursiershared] object ArtifactsTasks {
 
   def coursierPublicationsTask(
     configsMap: (sbt.librarymanagement.Configuration, Configuration)*
@@ -97,18 +96,14 @@ object ArtifactsTasks {
 
       def artifactPublication(artifact: sbt.Artifact) = {
 
-        val name = FromSbt.sbtCrossVersionName(
-          artifact.name,
-          projId.crossVersion,
-          sv,
-          sbv
-        )
+        val name = CrossVersion(projId.crossVersion, sv, sbv)
+          .fold(artifact.name)(_(artifact.name))
 
         Publication(
           name,
           Type(artifact.`type`),
           Extension(artifact.extension),
-          artifact.classifier.fold(Classifier.empty)(Classifier(_))
+          artifact.classifier.fold(Classifier(""))(Classifier(_))
         )
       }
 
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala
index 49bacf29a..e0744df52 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/InputsTasks.scala
@@ -1,18 +1,61 @@
 package coursier.sbtcoursiershared
 
-import coursier.core._
-import coursier.credentials.DirectCredentials
-import coursier.lmcoursier._
+import lmcoursier.definitions.{Attributes, Classifier, Configuration, Dependency, Info, Module, ModuleName, Organization, Project, Type}
+import lmcoursier.{FallbackDependency, FromSbt, Inputs}
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
 import coursier.sbtcoursiershared.Structure._
-import sbt.Def
+import lmcoursier.credentials.DirectCredentials
+import sbt.{Def, SettingKey}
 import sbt.Keys._
+import sbt.librarymanagement.{InclExclRule, ModuleID}
+import sbt.util.Logger
 
 import scala.collection.JavaConverters._
+import scala.language.reflectiveCalls
 
 object InputsTasks {
 
-  def coursierProjectTask: Def.Initialize[sbt.Task[Project]] =
+  lazy val actualExcludeDependencies =
+    try {
+      sbt.Keys
+        .asInstanceOf[{ def allExcludeDependencies: SettingKey[scala.Seq[InclExclRule]] }]
+        .allExcludeDependencies
+    } catch {
+      case _: NoSuchMethodException =>
+        excludeDependencies
+    }
+
+  private def coursierProject0(
+    projId: ModuleID,
+    dependencies: Seq[ModuleID],
+    excludeDeps: Seq[InclExclRule],
+    configurations: Seq[sbt.librarymanagement.Configuration],
+    sv: String,
+    sbv: String,
+    log: Logger
+  ): Project = {
+
+    val exclusions0 = Inputs.exclusions(excludeDeps, sv, sbv, log)
+
+    val configMap = Inputs.configExtends(configurations)
+
+    val proj = FromSbt.project(
+      projId,
+      dependencies,
+      configMap,
+      sv,
+      sbv
+    )
+
+    proj.copy(
+      dependencies = proj.dependencies.map {
+        case (config, dep) =>
+          (config, dep.copy(exclusions = dep.exclusions ++ exclusions0))
+      }
+    )
+  }
+
+  private[sbtcoursiershared] def coursierProjectTask: Def.Initialize[sbt.Task[Project]] =
     Def.taskDyn {
 
       val state = sbt.Keys.state.value
@@ -21,10 +64,10 @@ object InputsTasks {
       val allDependenciesTask = allDependencies.in(projectRef).get(state)
 
       Def.task {
-        Inputs.coursierProject(
+        coursierProject0(
           projectID.in(projectRef).get(state),
           allDependenciesTask.value,
-          excludeDependencies.in(projectRef).get(state),
+          actualExcludeDependencies.in(projectRef).get(state),
           // should projectID.configurations be used instead?
           ivyConfigurations.in(projectRef).get(state),
           scalaVersion.in(projectRef).get(state),
@@ -63,7 +106,7 @@ object InputsTasks {
     val configurations = desc
       .getModuleConfigurations
       .toVector
-      .flatMap(s => coursier.ivy.IvyXml.mappings(s))
+      .flatMap(Inputs.ivyXmlMappings)
 
     def dependency(conf: Configuration, attr: Attributes) = Dependency(
       module,
@@ -80,13 +123,13 @@ object InputsTasks {
       val artifacts = desc.getAllDependencyArtifacts
 
       val m = artifacts.toVector.flatMap { art =>
-        val attr = Attributes(Type(art.getType), Classifier.empty)
+        val attr = Attributes(Type(art.getType), Classifier(""))
         art.getConfigurations.map(Configuration(_)).toVector.map { conf =>
           conf -> attr
         }
       }.toMap
 
-      c => m.getOrElse(c, Attributes.empty)
+      c => m.getOrElse(c, Attributes(Type(""), Classifier("")))
     }
 
     configurations.map {
@@ -95,7 +138,7 @@ object InputsTasks {
     }
   }
 
-  def coursierInterProjectDependenciesTask: Def.Initialize[sbt.Task[Seq[Project]]] =
+  private[sbtcoursiershared] def coursierInterProjectDependenciesTask: Def.Initialize[sbt.Task[Seq[Project]]] =
     Def.taskDyn {
 
       val state = sbt.Keys.state.value
@@ -141,17 +184,10 @@ object InputsTasks {
                 v.getModuleRevisionId.getRevision,
                 deps,
                 configurations,
-                None,
-                Nil,
-                Nil,
                 Nil,
                 None,
-                None,
-                None,
-                relocated = false,
-                None,
                 Nil,
-                Info.empty
+                Info("", "", Nil, Nil, None)
               )
           }
 
@@ -159,7 +195,7 @@ object InputsTasks {
       }
     }
 
-  def coursierFallbackDependenciesTask: Def.Initialize[sbt.Task[Seq[FallbackDependency]]] =
+  private[sbtcoursiershared] def coursierFallbackDependenciesTask: Def.Initialize[sbt.Task[Seq[FallbackDependency]]] =
     Def.taskDyn {
 
       val state = sbt.Keys.state.value
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/IvyXml.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/IvyXml.scala
index 95dd98c62..dcb6c90b3 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/IvyXml.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/IvyXml.scala
@@ -3,7 +3,7 @@ package coursier.sbtcoursiershared
 import java.nio.charset.StandardCharsets.UTF_8
 import java.nio.file.Files
 
-import coursier.core.{Configuration, Project}
+import lmcoursier.definitions.{Configuration, Project}
 import org.apache.ivy.core.module.id.ModuleRevisionId
 import sbt.{Def, Setting, Task, TaskKey}
 import sbt.internal.librarymanagement.IvySbt
@@ -14,7 +14,7 @@ import scala.xml.{Node, PrefixedAttribute}
 
 object IvyXml {
 
-  def rawContent(
+  private[sbtcoursiershared] def rawContent(
     currentProject: Project,
     shadedConfigOpt: Option[Configuration]
   ): String = {
@@ -32,7 +32,7 @@ object IvyXml {
   }
 
   // These are required for publish to be fine, later on.
-  def writeFiles(
+  private def writeFiles(
     currentProject: Project,
     shadedConfigOpt: Option[Configuration],
     ivySbt: IvySbt,
@@ -63,13 +63,13 @@ object IvyXml {
     Files.write(cacheIvyPropertiesFile.toPath, Array.emptyByteArray)
   }
 
-  def content(project0: Project, shadedConfigOpt: Option[Configuration]): Node = {
+  private def content(project0: Project, shadedConfigOpt: Option[Configuration]): Node = {
 
     val filterOutDependencies =
       shadedConfigOpt.toSet[Configuration].flatMap { shadedConfig =>
         project0
           .dependencies
-          .collect { case (`shadedConfig`, dep) => dep }
+          .collect { case (conf, dep) if conf.value == shadedConfig.value => dep }
       }
 
     val project: Project = project0.copy(
@@ -104,8 +104,8 @@ object IvyXml {
     } % infoAttrs
 
     val confElems = project.configurations.toVector.collect {
-      case (name, extends0) if !shadedConfigOpt.contains(name) =>
-        val extends1 = shadedConfigOpt.fold(extends0)(c => extends0.filter(_ != c))
+      case (name, extends0) if !shadedConfigOpt.exists(_.value == name.value) =>
+        val extends1 = shadedConfigOpt.fold(extends0)(c => extends0.filter(_.value != c.value))
         val n = <conf name={name.value} visibility="public" description="" />
         if (extends1.nonEmpty)
           n % <x extends={extends1.map(_.value).mkString(",")} />.attributes
@@ -122,7 +122,7 @@ object IvyXml {
       case (pub, configs) =>
         val n = <artifact name={pub.name} type={pub.`type`.value} ext={pub.ext.value} conf={configs.map(_.value).mkString(",")} />
 
-        if (pub.classifier.nonEmpty)
+        if (pub.classifier.value.nonEmpty)
           n % <x e:classifier={pub.classifier.value} />.attributes
         else
           n
@@ -155,7 +155,7 @@ object IvyXml {
     </ivy-module>
   }
 
-  def makeIvyXmlBefore[T](
+  private def makeIvyXmlBefore[T](
     task: TaskKey[T],
     shadedConfigOpt: Option[Configuration]
   ): Setting[Task[T]] =
@@ -170,7 +170,7 @@ object IvyXml {
               val publications = coursierPublications.value
               proj.copy(publications = publications)
             }
-            IvyXml.writeFiles(currentProject, shadedConfigOpt, sbt.Keys.ivySbt.value, sbt.Keys.streams.value.log)
+            writeFiles(currentProject, shadedConfigOpt, sbt.Keys.ivySbt.value, sbt.Keys.streams.value.log)
           }
         else
           Def.task(())
@@ -194,6 +194,6 @@ object IvyXml {
   def generateIvyXmlSettings(
     shadedConfigOpt: Option[Configuration] = None
   ): Seq[Setting[_]] =
-    (needsIvyXml ++ needsIvyXmlLocal).map(IvyXml.makeIvyXmlBefore(_, shadedConfigOpt))
+    (needsIvyXml ++ needsIvyXmlLocal).map(makeIvyXmlBefore(_, shadedConfigOpt))
 
 }
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/RepositoriesTasks.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/RepositoriesTasks.scala
index 1abb9c9de..df950b336 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/RepositoriesTasks.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/RepositoriesTasks.scala
@@ -1,13 +1,52 @@
 package coursier.sbtcoursiershared
 
-import coursier.lmcoursier._
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
 import coursier.sbtcoursiershared.Structure._
 import sbt.{Classpaths, Def}
 import sbt.Keys._
-import sbt.librarymanagement.Resolver
+import sbt.librarymanagement.{Resolver, URLRepository}
 
-object RepositoriesTasks {
+private[sbtcoursiershared] object RepositoriesTasks {
+
+  private object Resolvers {
+
+    private val slowReposBase = Seq(
+      "https://repo.typesafe.com/",
+      "https://repo.scala-sbt.org/",
+      "http://repo.typesafe.com/",
+      "http://repo.scala-sbt.org/"
+    )
+
+    private val fastReposBase = Seq(
+      "http://repo1.maven.org/",
+      "https://repo1.maven.org/"
+    )
+
+    private def url(res: Resolver): Option[String] =
+      res match {
+        case m: sbt.librarymanagement.MavenRepository =>
+          Some(m.root)
+        case u: URLRepository =>
+          u.patterns.artifactPatterns.headOption
+            .orElse(u.patterns.ivyPatterns.headOption)
+        case _ =>
+          None
+      }
+
+    private def fastRepo(res: Resolver): Boolean =
+      url(res).exists(u => fastReposBase.exists(u.startsWith))
+
+    private def slowRepo(res: Resolver): Boolean =
+      url(res).exists(u => slowReposBase.exists(u.startsWith))
+
+    def reorderResolvers(resolvers: Seq[Resolver]): Seq[Resolver] =
+      if (resolvers.exists(fastRepo) && resolvers.exists(slowRepo)) {
+        val (slow, other) = resolvers.partition(slowRepo)
+        other ++ slow
+      } else
+        resolvers
+
+  }
 
   private def resultTask(bootResOpt: Option[Seq[Resolver]], overrideFlag: Boolean): Def.Initialize[sbt.Task[Seq[Resolver]]] =
     bootResOpt.filter(_ => overrideFlag) match {
@@ -41,7 +80,7 @@ object RepositoriesTasks {
 
         val result0 =
           if (reorderResolvers)
-            ResolutionParams.reorderResolvers(result)
+            Resolvers.reorderResolvers(result)
           else
             result
 
diff --git a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala
index c148091d3..e273af4d3 100644
--- a/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala
+++ b/modules/sbt-coursier-shared/src/main/scala/coursier/sbtcoursiershared/SbtCoursierShared.scala
@@ -2,11 +2,11 @@ package coursier.sbtcoursiershared
 
 import java.io.File
 
-import coursier.cache.{CacheDefaults, CacheLogger}
 import coursier.{Credentials => LegacyCredentials}
-import coursier.core.{Configuration, Project, Publication}
-import coursier.credentials.Credentials
-import coursier.lmcoursier.{FallbackDependency, SbtCoursierCache}
+import lmcoursier.credentials.Credentials
+import lmcoursier.{CoursierDependencyResolution, FallbackDependency}
+import lmcoursier.definitions.{CacheLogger, Configuration, Project, Publication}
+import lmcoursier.internal.SbtCoursierCache
 import sbt.{AutoPlugin, Classpaths, Compile, Setting, TaskKey, Test, settingKey, taskKey}
 import sbt.Keys._
 import sbt.librarymanagement.{Resolver, URLRepository}
@@ -64,7 +64,7 @@ object SbtCoursierShared extends AutoPlugin {
       coursierReorderResolvers := true,
       coursierKeepPreloaded := false,
       coursierLogger := None,
-      coursierCache := CacheDefaults.location
+      coursierCache := CoursierDependencyResolution.defaultCacheLocation
     )
 
   private val pluginIvySnapshotsBase = Resolver.SbtRepositoryRoot.stripSuffix("/") + "/ivy-snapshots"
diff --git a/modules/sbt-coursier-shared/src/test/scala/coursier/sbtcoursiershared/IvyXmlTests.scala b/modules/sbt-coursier-shared/src/test/scala/coursier/sbtcoursiershared/IvyXmlTests.scala
index 35e7da556..6a460e0be 100644
--- a/modules/sbt-coursier-shared/src/test/scala/coursier/sbtcoursiershared/IvyXmlTests.scala
+++ b/modules/sbt-coursier-shared/src/test/scala/coursier/sbtcoursiershared/IvyXmlTests.scala
@@ -1,7 +1,6 @@
 package coursier.sbtcoursiershared
 
-import coursier.core.Configuration
-import coursier.{Info, Module, Project, moduleNameString, organizationString}
+import lmcoursier.definitions.{Configuration, Info, Module, ModuleName, Organization, Project}
 import utest._
 
 object IvyXmlTests extends TestSuite {
@@ -10,23 +9,16 @@ object IvyXmlTests extends TestSuite {
     "no truncation" - {
 
       val project = Project(
-        Module(org"org", name"name"),
+        Module(Organization("org"), ModuleName("name"), Map()),
         "ver",
         Nil,
         Map(
           Configuration("foo") -> (1 to 80).map(n => Configuration("bar" + n)) // long list of configurations -> no truncation any way
         ),
-        None,
-        Nil,
-        Nil,
         Nil,
         None,
-        None,
-        None,
-        relocated = false,
-        None,
         Nil,
-        Info.empty
+        Info("", "", Nil, Nil, None)
       )
 
       val content = IvyXml.rawContent(project, None)
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ArtifactsTasks.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ArtifactsTasks.scala
index c62f90fa0..32250daf3 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ArtifactsTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ArtifactsTasks.scala
@@ -5,10 +5,11 @@ import java.io.File
 import coursier.Artifact
 import coursier.cache.FileCache
 import coursier.core._
-import coursier.lmcoursier._
+import lmcoursier.internal.{ArtifactsParams, ArtifactsRun}
 import coursier.sbtcoursier.Keys._
 import coursier.sbtcoursiershared.InputsTasks.credentialsTask
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport.{coursierCache, coursierLogger}
+import lmcoursier.definitions.ToCoursier
 import sbt.Def
 import sbt.Keys._
 
@@ -45,8 +46,8 @@ object ArtifactsTasks {
       val cachePolicies = coursierCachePolicies.value
       val ttl = coursierTtl.value
       val cache = coursierCache.value
-      val createLogger = coursierLogger.value
-      val credentials = credentialsTask.value
+      val createLogger = coursierLogger.value.map(ToCoursier.cacheLogger)
+      val credentials = credentialsTask.value.map(ToCoursier.credentials)
 
       val log = streams.value.log
 
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/CoursierPlugin.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/CoursierPlugin.scala
index e76f84d8c..953fa2df0 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/CoursierPlugin.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/CoursierPlugin.scala
@@ -1,6 +1,6 @@
 package coursier.sbtcoursier
 
-import coursier.cache.{CacheDefaults, CachePolicy}
+import coursier.cache.CacheDefaults
 import coursier.core.{Configuration, ResolutionProcess}
 import coursier.sbtcoursiershared.SbtCoursierShared
 import sbt.{Cache => _, Configuration => _, _}
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/DisplayTasks.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/DisplayTasks.scala
index 2ff2b5256..29bd26a59 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/DisplayTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/DisplayTasks.scala
@@ -1,7 +1,7 @@
 package coursier.sbtcoursier
 
 import coursier.core._
-import coursier.lmcoursier._
+import lmcoursier.definitions.ToCoursier
 import coursier.parse.ModuleParser
 import coursier.sbtcoursier.Keys._
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
@@ -26,7 +26,7 @@ object DisplayTasks {
           val sv = scalaVersion.value
           val sbv = scalaBinaryVersion.value
           val cm = coursierSbtClassifiersModule.value
-          FromSbt.sbtClassifiersProject(cm, sv, sbv)
+          SbtCoursierFromSbt.sbtClassifiersProject(cm, sv, sbv)
         }
       else
         Def.task {
@@ -40,14 +40,14 @@ object DisplayTasks {
         Def.task {
           val currentProject = currentProjectTask.value
           val classifiersRes = coursierSbtClassifiersResolution.value
-          Map(currentProject.configurations.keySet -> classifiersRes)
+          Map(currentProject.configurations.keySet.map(ToCoursier.configuration) -> classifiersRes)
         }
       else
         Def.task(coursierResolutions.value)
 
     Def.task {
 
-      val currentProject = currentProjectTask.value
+      val currentProject = ToCoursier.project(currentProjectTask.value)
 
       val config = Configuration(configuration.value.name)
       val configs = coursierConfigurations.value
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/InputsTasks.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/InputsTasks.scala
index f9f6c54d8..8f743a4fc 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/InputsTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/InputsTasks.scala
@@ -2,7 +2,8 @@ package coursier.sbtcoursier
 
 import coursier.ProjectCache
 import coursier.core._
-import coursier.lmcoursier._
+import lmcoursier._
+import lmcoursier.definitions.ToCoursier
 import coursier.sbtcoursier.Keys._
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
 import coursier.sbtcoursiershared.Structure._
@@ -16,13 +17,19 @@ object InputsTasks {
     shadedConfig: Option[(String, Configuration)]
   ): Def.Initialize[sbt.Task[Map[Configuration, Set[Configuration]]]] =
     Def.task {
-      Inputs.coursierConfigurations(ivyConfigurations.value, shadedConfig)
+      Inputs.coursierConfigurations(ivyConfigurations.value, shadedConfig.map {
+        case (from, to) =>
+          (from, lmcoursier.definitions.Configuration(to.value))
+      }).map {
+        case (k, v) =>
+          ToCoursier.configuration(k) -> v.map(ToCoursier.configuration)
+      }
     }
 
   def ivyGraphsTask: Def.Initialize[sbt.Task[Seq[Set[Configuration]]]] =
     Def.task {
       val p = coursierProject.value
-      Inputs.ivyGraphs(p.configurations)
+      Inputs.ivyGraphs(p.configurations).map(_.map(ToCoursier.configuration))
     }
 
   def parentProjectCacheTask: Def.Initialize[sbt.Task[Map[Seq[sbt.librarymanagement.Resolver], Seq[coursier.ProjectCache]]]] =
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
index 45a13eb85..51ffd8546 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/ResolutionTasks.scala
@@ -4,7 +4,9 @@ import coursier.ProjectCache
 import coursier.cache.FileCache
 import coursier.core._
 import coursier.internal.Typelevel
-import coursier.lmcoursier._
+import lmcoursier.definitions.ToCoursier
+import lmcoursier.{FallbackDependency, FromSbt}
+import lmcoursier.internal.{InterProjectRepository, ResolutionParams, ResolutionRun, Resolvers}
 import coursier.sbtcoursier.Keys._
 import coursier.sbtcoursiershared.InputsTasks.credentialsTask
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
@@ -23,7 +25,7 @@ object ResolutionTasks {
           val sv = scalaVersion.value
           val sbv = scalaBinaryVersion.value
           val cm = coursierSbtClassifiersModule.value
-          val proj = FromSbt.sbtClassifiersProject(cm, sv, sbv)
+          val proj = ToCoursier.project(SbtCoursierFromSbt.sbtClassifiersProject(cm, sv, sbv))
 
           val fallbackDeps = FromSbt.fallbackDependencies(
             cm.dependencies,
@@ -36,7 +38,8 @@ object ResolutionTasks {
       else
         Def.task {
           val baseConfigGraphs = coursierConfigGraphs.value
-          (coursierProject.value.copy(publications = coursierPublications.value), coursierFallbackDependencies.value, baseConfigGraphs)
+          val publications = coursierPublications.value
+          (ToCoursier.project(coursierProject.value.copy(publications = publications)), coursierFallbackDependencies.value, baseConfigGraphs)
         }
 
     val resolversTask =
@@ -51,7 +54,7 @@ object ResolutionTasks {
       val sv = scalaVersion.value
       val sbv = scalaBinaryVersion.value
 
-      val interProjectDependencies = coursierInterProjectDependencies.value
+      val interProjectDependencies = coursierInterProjectDependencies.value.map(ToCoursier.project)
 
       val parallelDownloads = coursierParallelDownloads.value
       val checksums = coursierChecksums.value
@@ -59,7 +62,7 @@ object ResolutionTasks {
       val cachePolicies = coursierCachePolicies.value
       val ttl = coursierTtl.value
       val cache = coursierCache.value
-      val createLogger = coursierLogger.value
+      val createLogger = coursierLogger.value.map(ToCoursier.cacheLogger)
 
       val log = streams.value.log
 
@@ -69,6 +72,10 @@ object ResolutionTasks {
       val userForceVersions = dependencyOverrides
         .value
         .map(FromSbt.moduleVersion(_, sv, sbv))
+        .map {
+          case (k, v) =>
+            ToCoursier.module(k) -> v
+        }
         .toMap
 
       val verbosityLevel = coursierVerbosity.value
@@ -91,7 +98,7 @@ object ResolutionTasks {
 
       // TODO Warn about possible duplicated modules from source repositories?
 
-      val credentials = credentialsTask.value
+      val credentials = credentialsTask.value.map(ToCoursier.credentials)
 
       val parentProjectCache: ProjectCache = coursierParentProjectCache.value
         .get(resolvers)
@@ -100,11 +107,18 @@ object ResolutionTasks {
 
       val mainRepositories = resolvers
         .flatMap { resolver =>
-          FromSbt.repository(
+          Resolvers.repository(
             resolver,
             ivyProperties,
             log,
-            authenticationByRepositoryId.get(resolver.name)
+            authenticationByRepositoryId.get(resolver.name).map { a =>
+              Authentication(
+                a.user,
+                a.password,
+                a.optional,
+                a.realmOpt
+              )
+            }
           )
         }
 
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/SbtCoursierFromSbt.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/SbtCoursierFromSbt.scala
new file mode 100644
index 000000000..e9768f57a
--- /dev/null
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/SbtCoursierFromSbt.scala
@@ -0,0 +1,37 @@
+package coursier.sbtcoursier
+
+import lmcoursier.FromSbt
+import lmcoursier.definitions.Configuration
+import sbt.librarymanagement.GetClassifiersModule
+
+object SbtCoursierFromSbt {
+
+  def sbtClassifiersProject(
+    cm: GetClassifiersModule,
+    scalaVersion: String,
+    scalaBinaryVersion: String
+  ) = {
+
+    val p = FromSbt.project(
+      cm.id,
+      cm.dependencies,
+      cm.configurations.map(cfg => Configuration(cfg.name) -> cfg.extendsConfigs.map(c => Configuration(c.name))).toMap,
+      scalaVersion,
+      scalaBinaryVersion
+    )
+
+    // for w/e reasons, the dependencies sometimes don't land in the right config above
+    // this is a loose attempt at fixing that
+    cm.configurations match {
+      case Seq(cfg) =>
+        p.copy(
+          dependencies = p.dependencies.map {
+            case (_, d) => (Configuration(cfg.name), d)
+          }
+        )
+      case _ =>
+        p
+    }
+  }
+
+}
diff --git a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/UpdateTasks.scala b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/UpdateTasks.scala
index 7ae6e983a..2c0e8df3f 100644
--- a/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/UpdateTasks.scala
+++ b/modules/sbt-coursier/src/main/scala/coursier/sbtcoursier/UpdateTasks.scala
@@ -1,7 +1,8 @@
 package coursier.sbtcoursier
 
 import coursier.core._
-import coursier.lmcoursier._
+import lmcoursier.definitions.ToCoursier
+import lmcoursier.internal.{SbtBootJars, SbtCoursierCache, UpdateParams, UpdateRun}
 import coursier.sbtcoursier.Keys._
 import coursier.sbtcoursiershared.SbtCoursierShared.autoImport._
 import sbt.Def
@@ -22,13 +23,12 @@ object UpdateTasks {
         Def.task {
           val sv = scalaVersion.value
           val sbv = scalaBinaryVersion.value
-          FromSbt.sbtClassifiersProject(coursierSbtClassifiersModule.value, sv, sbv)
+          SbtCoursierFromSbt.sbtClassifiersProject(coursierSbtClassifiersModule.value, sv, sbv)
         }
       else
         Def.task {
           val proj = coursierProject.value
           val publications = coursierPublications.value
-
           proj.copy(publications = publications)
         }
 
@@ -103,7 +103,7 @@ object UpdateTasks {
 
       val verbosityLevel = coursierVerbosity.value
 
-      val dependencies = currentProjectTask.value.dependencies
+      val dependencies = ToCoursier.project(currentProjectTask.value).dependencies
       val res = resTask.value
 
       val key = SbtCoursierCache.ReportKey(
@@ -134,10 +134,7 @@ object UpdateTasks {
               sbtBootJarOverrides
             )
 
-            val rep =
-              Lock.lock.synchronized {
-                UpdateRun.update(params, verbosityLevel, log)
-              }
+            val rep = UpdateRun.update(params, verbosityLevel, log)
             SbtCoursierCache.default.putReport(key, rep)
             rep
           }
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/build.sbt b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/build.sbt
similarity index 93%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/build.sbt
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/build.sbt
index fcb2f81c7..77b86764a 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-2/s3/build.sbt
+++ b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/build.sbt
@@ -23,9 +23,9 @@ check := {
   // Have Coursier SBT Plugin Parse the SBT Resolvers
   val parsedCoursierResolvers: Seq[coursier.core.Repository] =
     sbtResolvers.flatMap{ sbtResolver: sbt.librarymanagement.Resolver =>
-      coursier.lmcoursier.FromSbt.repository(
+      lmcoursier.internal.Resolvers.repository(
         resolver = sbtResolver,
-        ivyProperties = coursier.lmcoursier.ResolutionParams.defaultIvyProperties(),
+        ivyProperties = lmcoursier.internal.ResolutionParams.defaultIvyProperties(),
         log = s.log,
         authentication = None,
       )
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/project/build.properties b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/build.properties
similarity index 100%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/project/build.properties
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/build.properties
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/project/extra.sbt b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/extra.sbt
similarity index 100%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/project/extra.sbt
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/extra.sbt
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/project/plugins.sbt b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/plugins.sbt
similarity index 100%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/project/plugins.sbt
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/plugins.sbt
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/project/project/plugins.sbt b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/project/plugins.sbt
similarity index 100%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/project/project/plugins.sbt
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/project/project/plugins.sbt
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/src/main/scala/Foo.scala b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/src/main/scala/Foo.scala
similarity index 100%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/src/main/scala/Foo.scala
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/src/main/scala/Foo.scala
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/s3/test b/modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/test
similarity index 100%
rename from modules/sbt-coursier/src/sbt-test/shared-2/s3/test
rename to modules/sbt-coursier/src/sbt-test/sbt-coursier/s3/test
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/build.sbt
new file mode 100644
index 000000000..8c2b3c509
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/build.sbt
@@ -0,0 +1,11 @@
+
+scalaVersion := "2.11.8"
+
+organization := "io.get-coursier.test"
+name := "sbt-coursier-all-exclude-dependencies"
+version := "0.1.0-SNAPSHOT"
+
+libraryDependencies += "com.github.alexarchambault" %% "argonaut-shapeless_6.1" % "1.0.0-RC1"
+
+allExcludeDependencies += sbt.ExclusionRule("com.chuusai", "shapeless_2.11")
+allExcludeDependencies += "io.argonaut" %% "argonaut"
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/coursier b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/coursier
new file mode 100755
index 000000000..6cada6f8b
Binary files /dev/null and b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/coursier differ
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/project/build.properties b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/project/build.properties
new file mode 100644
index 000000000..3149e6ba1
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/project/build.properties
@@ -0,0 +1 @@
+sbt.version=1.3.0-M2
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/project/plugins.sbt b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/project/plugins.sbt
new file mode 100644
index 000000000..71a44ffd3
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/project/plugins.sbt
@@ -0,0 +1,13 @@
+addSbtPlugin {
+
+  val name = sys.props.getOrElse(
+    "plugin.name",
+    sys.error("plugin.name Java property not set")
+  )
+  val version = sys.props.getOrElse(
+    "plugin.version",
+    sys.error("plugin.version Java property not set")
+  )
+
+  "io.get-coursier" % name % version
+}
\ No newline at end of file
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/src/main/scala/Main.scala b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/src/main/scala/Main.scala
new file mode 100644
index 000000000..1bc056610
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/src/main/scala/Main.scala
@@ -0,0 +1,32 @@
+import java.io.File
+import java.nio.file.Files
+
+import scala.util.Try
+
+object Main extends App {
+
+  def classFound(clsName: String) = Try(
+    Thread.currentThread()
+      .getContextClassLoader()
+      .loadClass(clsName)
+  ).toOption.nonEmpty
+
+  val shapelessFound = classFound("shapeless.HList")
+  val argonautFound = classFound("argonaut.Json")
+  val argonautShapelessFound = classFound("argonaut.derive.MkEncodeJson")
+
+  assert(
+    argonautShapelessFound,
+    "Expected to find class from argonaut-shapeless"
+  )
+  assert(
+    !shapelessFound,
+    "Expected not to find classes from shapeless"
+  )
+  assert(
+    !argonautFound,
+    "Expected not to find classes from argonaut"
+  )
+
+  Files.write(new File("output").toPath, "OK".getBytes("UTF-8"))
+}
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/test b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/test
new file mode 100644
index 000000000..21084fb8e
--- /dev/null
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/all-exclude-dependencies/test
@@ -0,0 +1,5 @@
+$ delete output
+> run
+$ exists output
+> publishLocal
+$ exec java -jar coursier launch io.get-coursier.test:sbt-coursier-all-exclude-dependencies_2.11:0.1.0-SNAPSHOT
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/clean/project/Helper.scala b/modules/sbt-coursier/src/sbt-test/shared-1/clean/project/Helper.scala
index b567f06bf..308434a75 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-1/clean/project/Helper.scala
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/clean/project/Helper.scala
@@ -3,6 +3,6 @@ package coursier
 object Helper {
 
   def checkEmpty(): Boolean =
-    coursier.lmcoursier.SbtCoursierCache.default.isEmpty
+    lmcoursier.internal.SbtCoursierCache.default.isEmpty
 
 }
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/credentials-from-file/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-1/credentials-from-file/build.sbt
index d69b7f7dc..4f809c617 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-1/credentials-from-file/build.sbt
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/credentials-from-file/build.sbt
@@ -14,7 +14,7 @@ coursierExtraCredentials += {
      """.stripMargin
   val dest = baseDirectory.in(ThisBuild).value / "project" / "target" / "cred"
   Files.write(dest.toPath, content.getBytes("UTF-8"))
-  coursier.credentials.Credentials(dest)
+  lmcoursier.credentials.Credentials(dest)
 }
 
 libraryDependencies += "com.abc" % "test" % "0.1"
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/credentials-global/global/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-1/credentials-global/global/build.sbt
index 59c5f99be..ee97bd987 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-1/credentials-global/global/build.sbt
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/credentials-global/global/build.sbt
@@ -1,4 +1,4 @@
-coursierExtraCredentials += coursier.credentials.Credentials(
+coursierExtraCredentials += lmcoursier.credentials.Credentials(
   uri(sys.env("TEST_REPOSITORY")).getHost,
   sys.env("TEST_REPOSITORY_USER"),
   sys.env("TEST_REPOSITORY_PASSWORD")
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/credentials/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-1/credentials/build.sbt
index 4f1076d20..00f8aaec5 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-1/credentials/build.sbt
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/credentials/build.sbt
@@ -2,7 +2,7 @@ scalaVersion := "2.11.8"
 
 resolvers += "authenticated" at sys.env("TEST_REPOSITORY")
 
-coursierExtraCredentials += coursier.credentials.Credentials(
+coursierExtraCredentials += lmcoursier.credentials.Credentials(
   uri(sys.env("TEST_REPOSITORY")).getHost,
   sys.env("TEST_REPOSITORY_USER"),
   sys.env("TEST_REPOSITORY_PASSWORD")
diff --git a/modules/sbt-coursier/src/sbt-test/shared-1/logger/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-1/logger/build.sbt
index a9c823b68..6271170aa 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-1/logger/build.sbt
+++ b/modules/sbt-coursier/src/sbt-test/shared-1/logger/build.sbt
@@ -14,7 +14,7 @@ coursierLogger := {
   }
   val cacheFile = coursierCache.value
 
-  val logger = new coursier.cache.CacheLogger {
+  val logger = new lmcoursier.definitions.CacheLogger {
     override def init(sizeHint: Option[Int]): Unit = {
       logStream = new java.io.PrintStream(
         new java.io.FileOutputStream(logFile.value, true)
diff --git a/modules/sbt-coursier/src/sbt-test/shared-2/update-sbt-classifiers/build.sbt b/modules/sbt-coursier/src/sbt-test/shared-2/update-sbt-classifiers/build.sbt
index 0c59d622c..2dac5446b 100644
--- a/modules/sbt-coursier/src/sbt-test/shared-2/update-sbt-classifiers/build.sbt
+++ b/modules/sbt-coursier/src/sbt-test/shared-2/update-sbt-classifiers/build.sbt
@@ -32,13 +32,19 @@ updateSbtClassifiersCheck := {
       .toSeq
       .flatten
 
-  def ensureHasArtifact(org: String, name: String) =
+  def ensureHasArtifact(orgName: (String, String)*) =
     assert(
-      artifacts(org, name).exists(_._2.getName.endsWith("-sources.jar")),
-      s"$org:$name not found"
+      orgName.exists {
+        case (org, name) =>
+          artifacts(org, name).exists(_._2.getName.endsWith("-sources.jar"))
+      },
+      s"Any of $orgName not found"
     )
 
-  ensureHasArtifact("org.scala-lang", "scala-library")
-  ensureHasArtifact("io.get-coursier", "coursier-core_" + scalaBinaryVersion.value)
-  ensureHasArtifact("io.get-coursier", "lm-coursier_" + scalaBinaryVersion.value)
+  ensureHasArtifact("org.scala-lang" -> "scala-library")
+  ensureHasArtifact("org.scala-lang.modules" -> s"scala-xml_${scalaBinaryVersion.value}")
+  ensureHasArtifact(
+    "io.get-coursier" -> s"lm-coursier_${scalaBinaryVersion.value}",
+    "io.get-coursier" -> s"lm-coursier-shaded_${scalaBinaryVersion.value}"
+  )
 }
diff --git a/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala b/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala
index 1a16c37e4..995d86c1b 100644
--- a/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala
+++ b/modules/sbt-lm-coursier/src/main/scala/coursier/sbtlmcoursier/LmCoursierPlugin.scala
@@ -1,15 +1,17 @@
 package coursier.sbtlmcoursier
 
-import coursier.core.Classifier
-import coursier.lmcoursier.{CoursierConfiguration, CoursierDependencyResolution, Inputs}
+import lmcoursier.definitions.Authentication
+import lmcoursier.{CoursierConfiguration, CoursierDependencyResolution, Inputs}
 import coursier.sbtcoursiershared.InputsTasks.credentialsTask
-import coursier.sbtcoursiershared.SbtCoursierShared
+import coursier.sbtcoursiershared.{InputsTasks, SbtCoursierShared}
 import sbt.{AutoPlugin, Classpaths, Def, Setting, Task, taskKey}
 import sbt.Project.inTask
 import sbt.KeyRanks.DTask
-import sbt.Keys.{appConfiguration, autoScalaLibrary, classpathTypes, dependencyResolution, excludeDependencies, scalaBinaryVersion, scalaModuleInfo, scalaOrganization, scalaVersion, streams, updateClassifiers, updateSbtClassifiers}
+import sbt.Keys.{appConfiguration, autoScalaLibrary, classpathTypes, dependencyResolution, scalaBinaryVersion, scalaModuleInfo, scalaOrganization, scalaVersion, streams, updateClassifiers, updateSbtClassifiers}
 import sbt.librarymanagement.DependencyResolution
 
+import scala.language.reflectiveCalls
+
 object LmCoursierPlugin extends AutoPlugin {
 
   import SbtCoursierShared.autoImport._
@@ -67,9 +69,9 @@ object LmCoursierPlugin extends AutoPlugin {
           coursierSbtResolvers
         else
           coursierRecursiveResolvers
-      val classifiersTask: sbt.Def.Initialize[sbt.Task[Option[Seq[Classifier]]]] =
+      val classifiersTask: sbt.Def.Initialize[sbt.Task[Option[Seq[String]]]] =
         if (withClassifiers && !sbtClassifiers)
-          Def.task(Some(sbt.Keys.transitiveClassifiers.value.map(Classifier(_))))
+          Def.task(Some(sbt.Keys.transitiveClassifiers.value))
         else
           Def.task(None)
       Def.task {
@@ -78,7 +80,7 @@ object LmCoursierPlugin extends AutoPlugin {
         val scalaVer = scalaVersion.value
         val interProjectDependencies = coursierInterProjectDependencies.value
         val excludeDeps = Inputs.exclusions(
-          excludeDependencies.value,
+          InputsTasks.actualExcludeDependencies.value,
           scalaVer,
           scalaBinaryVersion.value,
           streams.value.log
@@ -87,7 +89,10 @@ object LmCoursierPlugin extends AutoPlugin {
         val autoScalaLib = autoScalaLibrary.value && scalaModuleInfo.value.forall(_.overrideScalaVersion)
         val profiles = mavenProfiles.value
 
-        val authenticationByRepositoryId = coursierCredentials.value.mapValues(_.authentication)
+        val authenticationByRepositoryId = coursierCredentials.value.mapValues { c =>
+          val a = c.authentication
+          Authentication(a.user, a.password, a.optional, a.realmOpt)
+        }
         val credentials = credentialsTask.value
 
         val createLogger = coursierLogger.value
@@ -108,17 +113,17 @@ object LmCoursierPlugin extends AutoPlugin {
           .withExcludeDependencies(
             excludeDeps
               .toVector
-              .sorted
               .map {
                 case (o, n) =>
                   (o.value, n.value)
               }
+              .sorted
           )
           .withAutoScalaLibrary(autoScalaLib)
           .withSbtScalaJars(sbtBootJars.toVector)
           .withSbtScalaVersion(sbtScalaVersion)
           .withSbtScalaOrganization(sbtScalaOrganization)
-          .withClassifiers(classifiers.toVector.flatten.map(_.value))
+          .withClassifiers(classifiers.toVector.flatten)
           .withHasClassifiers(classifiers.nonEmpty)
           .withMavenProfiles(profiles.toVector.sorted)
           .withScalaOrganization(scalaOrg)
diff --git a/modules/sbt-shading/src/main/scala/coursier/ShadingPlugin.scala b/modules/sbt-shading/src/main/scala/coursier/ShadingPlugin.scala
index f7412dff3..a4a960401 100644
--- a/modules/sbt-shading/src/main/scala/coursier/ShadingPlugin.scala
+++ b/modules/sbt-shading/src/main/scala/coursier/ShadingPlugin.scala
@@ -4,6 +4,7 @@ import java.io.File
 
 import coursier.core.Configuration
 import coursier.ivy.IvyXml.{mappings => ivyXmlMappings}
+import lmcoursier.definitions.{ToCoursier, Configuration => DConfiguration}
 import coursier.sbtcoursier.{CoursierPlugin, InputsTasks, Keys}
 import coursier.sbtcoursiershared.{IvyXml, SbtCoursierShared}
 import sbt.Keys._
@@ -25,7 +26,7 @@ object ShadingPlugin extends AutoPlugin {
     transitive = true
   )
 
-  private val baseDependencyConfiguration = Configuration.compile
+  private val baseDependencyConfiguration = Configuration("compile")
   val Shaded = sbt.Configuration.of(
     id = "Shaded",
     name = "shaded",
@@ -101,8 +102,8 @@ object ShadingPlugin extends AutoPlugin {
         CoursierPlugin.coursierSettings(
           Some(baseDependencyConfiguration.value -> Configuration(Shaded.name))
         ) ++
-        IvyXml.generateIvyXmlSettings(Some(Configuration(Shaded.name))) ++
-        Seq(SbtCoursierShared.publicationsSetting(Seq(Shading -> Configuration.compile))) ++
+        IvyXml.generateIvyXmlSettings(Some(lmcoursier.definitions.Configuration(Shaded.name))) ++
+        Seq(SbtCoursierShared.publicationsSetting(Seq(Shading -> DConfiguration("compile")))) ++
         CoursierPlugin.treeSettings ++
         Seq(
           configuration := baseSbtConfiguration, // wuw
@@ -120,7 +121,7 @@ object ShadingPlugin extends AutoPlugin {
           unmanagedSourceDirectories := (unmanagedSourceDirectories in Compile).value,
           toShadeJars := {
             coursier.Shading.toShadeJars(
-              coursierProject.in(baseSbtConfiguration).value,
+              ToCoursier.project(coursierProject.in(baseSbtConfiguration).value),
               coursierResolutions
                 .in(baseSbtConfiguration)
                 .value
diff --git a/project/DatatypeConfig.scala b/project/DatatypeConfig.scala
deleted file mode 100644
index 3ddb5261d..000000000
--- a/project/DatatypeConfig.scala
+++ /dev/null
@@ -1,75 +0,0 @@
-// from https://github.com/sbt/librarymanagement/blob/4a0a6c77bc24f9db139698cab0a6da78d0893a88/project/DatatypeConfig.scala
-
-import sbt.contraband.ast._
-import sbt.contraband.CodecCodeGen
-
-object DatatypeConfig {
-
-  /** Extract the only type parameter from a TpeRef */
-  def oneArg(tpe: Type): Type = {
-    val pat = s"""${tpe.removeTypeParameters.name}[<\\[](.+?)[>\\]]""".r
-    val pat(arg0) = tpe.name
-    NamedType(arg0 split '.' toList)
-  }
-
-  /** Extract the two type parameters from a TpeRef */
-  def twoArgs(tpe: Type): List[Type] = {
-    val pat = s"""${tpe.removeTypeParameters.name}[<\\[](.+?), (.+?)[>\\]]""".r
-    val pat(arg0, arg1) = tpe.name
-    NamedType(arg0 split '.' toList) :: NamedType(arg1 split '.' toList) :: Nil
-  }
-
-  /** Codecs that were manually written. */
-  val myCodecs: PartialFunction[String, Type => List[String]] = {
-    case "scala.xml.NodeSeq" => { _ =>
-      "sbt.internal.librarymanagement.formats.NodeSeqFormat" :: Nil
-    }
-
-    case "org.apache.ivy.plugins.resolver.DependencyResolver" => { _ =>
-      "sbt.internal.librarymanagement.formats.DependencyResolverFormat" :: Nil
-    }
-
-    case "xsbti.GlobalLock" => { _ =>
-      "sbt.internal.librarymanagement.formats.GlobalLockFormat" :: Nil
-    }
-    case "xsbti.Logger" => { _ =>
-      "sbt.internal.librarymanagement.formats.LoggerFormat" :: Nil
-    }
-
-    case "sbt.librarymanagement.ivy.UpdateOptions" => { _ =>
-      "sbt.librarymanagement.ivy.formats.UpdateOptionsFormat" :: Nil
-    }
-
-    case "sbt.librarymanagement.LogicalClock" => { _ =>
-      "sbt.internal.librarymanagement.formats.LogicalClockFormats" :: Nil
-    }
-
-    // TODO: These are handled by BasicJsonProtocol, and sbt-datatype should handle them by default, imo
-    case "Option" | "Set" | "scala.Vector" => { tpe =>
-      getFormats(oneArg(tpe))
-    }
-    case "Map" | "Tuple2" | "scala.Tuple2" => { tpe =>
-      twoArgs(tpe).flatMap(getFormats)
-    }
-    case "Int" | "Long" => { _ =>
-      Nil
-    }
-  }
-
-  /** Types for which we don't include the format -- they're just aliases to InclExclRule */
-  val excluded = Set("sbt.librarymanagement.InclusionRule", "sbt.librarymanagement.ExclusionRule")
-
-  /** Returns the list of formats required to encode the given `TpeRef`. */
-  val getFormats: Type => List[String] =
-    CodecCodeGen.extensibleFormatsForType {
-      case NamedType(List("sbt", "internal", "librarymanagement", "RetrieveConfiguration"), _) =>
-        "sbt.librarymanagement.RetrieveConfigurationFormats" :: Nil
-      case tpe: Type if myCodecs isDefinedAt tpe.removeTypeParameters.name =>
-        myCodecs(tpe.removeTypeParameters.name)(tpe)
-      case tpe: Type if excluded contains tpe.removeTypeParameters.name =>
-        Nil
-      case other =>
-        CodecCodeGen.formatsForType(other)
-    }
-
-}
diff --git a/project/Mima.scala b/project/Mima.scala
new file mode 100644
index 000000000..bdb5dfb02
--- /dev/null
+++ b/project/Mima.scala
@@ -0,0 +1,33 @@
+
+import com.typesafe.tools.mima.plugin.MimaPlugin
+import sbt._
+import sbt.Keys._
+import sys.process._
+
+object Mima {
+
+  private def stable(ver: String): Boolean =
+    ver.exists(c => c != '0' && c != '.') &&
+    ver
+      .replace("-RC", "-")
+      .forall(c => c == '.' || c == '-' || c.isDigit)
+
+  def binaryCompatibilityVersions: Set[String] =
+    Seq("git", "tag", "--merged", "HEAD^", "--contains", "736d5c11")
+      .!!
+      .linesIterator
+      .map(_.trim)
+      .filter(_.startsWith("v"))
+      .map(_.stripPrefix("v"))
+      .filter(stable)
+      .toSet
+
+  def settings: Seq[Setting[_]] = Seq(
+    MimaPlugin.autoImport.mimaPreviousArtifacts := {
+      binaryCompatibilityVersions.map { ver =>
+        (organization.value % moduleName.value % ver).cross(crossVersion.value)
+      }
+    }
+  )
+
+}
diff --git a/project/plugins.sbt b/project/plugins.sbt
index d3eef4933..23e1b8f36 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,7 +1,6 @@
 
 plugins_(
   "com.geirsson"       % "sbt-ci-release"           % "1.2.1",
-  "org.scala-sbt"      % "sbt-contraband"           % "0.4.3",
   "io.get-coursier"    % "sbt-coursier"             % sbtCoursierVersion,
   "com.typesafe"       % "sbt-mima-plugin"          % "0.3.0",
   "com.jsuereth"       % "sbt-pgp"                  % "1.1.2",
diff --git a/scripts/travis.sh b/scripts/travis.sh
index 55382af60..f8f58288c 100755
--- a/scripts/travis.sh
+++ b/scripts/travis.sh
@@ -14,8 +14,10 @@ sbtShading() {
 }
 
 runLmCoursierTests() {
+  # publishing locally to ensure shading runs fine
   ./metadata/scripts/with-test-repo.sh sbt \
     ++$TRAVIS_SCALA_VERSION \
+    lm-coursier-shaded/publishLocal \
     lm-coursier/test \
     "sbt-lm-coursier/scripted shared-$TEST_GROUP/*"
 }