Better inter-project dependencies handling

README.md

@@ -554,6 +554,8 @@ We're using the `Cache.file` method, that can also be given a `Logger` (for more
 
 #### Inter-project repository in the SBT plugin is a bit naive
 
+**Fixed in 1.0.0-M13**
+
 The inter-project repository is the pseudo-repository, nesting the metadata
 of sub-projects. It gets confused in at least these two cases:
 

doc/README.md

@@ -576,6 +576,8 @@ We're using the `Cache.file` method, that can also be given a `Logger` (for more
 
 #### Inter-project repository in the SBT plugin is a bit naive
 
+**Fixed in 1.0.0-M13**
+
 The inter-project repository is the pseudo-repository, nesting the metadata
 of sub-projects. It gets confused in at least these two cases:
 

plugin/src/main/scala-2.10/coursier/CoursierPlugin.scala

@@ -26,7 +26,7 @@ object CoursierPlugin extends AutoPlugin {
     val coursierFallbackDependencies = Keys.coursierFallbackDependencies
     val coursierCache = Keys.coursierCache
     val coursierProject = Keys.coursierProject
-    val coursierProjects = Keys.coursierProjects
+    val coursierInterProjectDependencies = Keys.coursierInterProjectDependencies
     val coursierPublications = Keys.coursierPublications
     val coursierSbtClassifiersModule = Keys.coursierSbtClassifiersModule
 
@@ -82,7 +82,7 @@ object CoursierPlugin extends AutoPlugin {
       ignoreArtifactErrors = true
     ),
     coursierProject <<= Tasks.coursierProjectTask,
-    coursierProjects <<= Tasks.coursierProjectsTask,
+    coursierInterProjectDependencies <<= Tasks.coursierInterProjectDependenciesTask,
     coursierPublications <<= Tasks.coursierPublicationsTask,
     coursierSbtClassifiersModule <<= classifiersModule in updateSbtClassifiers,
     coursierConfigurations <<= Tasks.coursierConfigurationsTask,

plugin/src/main/scala-2.10/coursier/Keys.scala

@@ -31,7 +31,7 @@ object Keys {
   val coursierFallbackDependencies = TaskKey[Seq[(Module, String, URL, Boolean)]]("coursier-fallback-dependencies")
 
   val coursierProject = TaskKey[Project]("coursier-project")
-  val coursierProjects = TaskKey[Seq[Project]]("coursier-projects")
+  val coursierInterProjectDependencies = TaskKey[Seq[Project]]("coursier-inter-project-dependencies", "Projects the current project depends on, possibly transitively")
   val coursierPublications = TaskKey[Seq[(String, Publication)]]("coursier-publications")
 
   val coursierSbtClassifiersModule = TaskKey[GetClassifiersModule]("coursier-sbt-classifiers-module")

plugin/src/main/scala-2.10/coursier/Tasks.scala

@@ -96,9 +96,32 @@ object Tasks {
       }
     }
 
-  def coursierProjectsTask: Def.Initialize[sbt.Task[Seq[Project]]] =
-    sbt.Keys.state.flatMap { state =>
-      val projects = structure(state).allProjectRefs
+  def coursierInterProjectDependenciesTask: Def.Initialize[sbt.Task[Seq[Project]]] =
+    (
+      sbt.Keys.state,
+      sbt.Keys.thisProjectRef
+    ).flatMap { (state, projectRef) =>
+
+      def dependencies(map: Map[String, Seq[String]], id: String): Set[String] = {
+
+        def helper(map: Map[String, Seq[String]], acc: Set[String]): Set[String] =
+          if (acc.exists(map.contains)) {
+            val (kept, rem) = map.partition { case (k, _) => acc(k) }
+            helper(rem, acc ++ kept.valuesIterator.flatten)
+          } else
+            acc
+
+        helper(map - id, map.getOrElse(id, Nil).toSet)
+      }
+
+      val allProjectsDeps =
+        for (p <- structure(state).allProjects)
+          yield p.id -> p.dependencies.map(_.project.project)
+
+      val deps = dependencies(allProjectsDeps.toMap, projectRef.project)
+
+      val projects = structure(state).allProjectRefs.filter(p => deps(p.project))
+
       coursierProject.forAllProjects(state, projects).map(_.values.toVector)
     }
 
@@ -271,7 +294,7 @@ object Tasks {
           (proj.copy(publications = publications), fallbackDeps)
         }
 
-      val projects = coursierProjects.value
+      val interProjectDependencies = coursierInterProjectDependencies.value
 
       val parallelDownloads = coursierParallelDownloads.value
       val checksums = coursierChecksums.value
@@ -363,12 +386,12 @@ object Tasks {
           userForceVersions ++
           sourceRepositoriesForcedDependencies ++
           forcedScalaModules(so, sv) ++
-          projects.map(_.moduleVersion)
+          interProjectDependencies.map(_.moduleVersion)
       )
 
       if (verbosityLevel >= 2) {
         log.info("InterProjectRepository")
-        for (p <- projects)
+        for (p <- interProjectDependencies)
           log.info(s"  ${p.module}:${p.version}")
       }
 
@@ -380,7 +403,7 @@ object Tasks {
         withArtifacts = false
       )
 
-      val interProjectRepo = InterProjectRepository(projects)
+      val interProjectRepo = InterProjectRepository(interProjectDependencies)
 
       val ivyProperties = Map(
         "ivy.home" -> (new File(sys.props("user.home")).toURI.getPath + ".ivy2")

plugin/src/sbt-test/sbt-coursier/inter-project/a/src/main/scala/A.scala

@@ -0,0 +1,6 @@
+
+object A {
+
+  def msg = "OK"
+
+}

plugin/src/sbt-test/sbt-coursier/inter-project/b/src/main/scala/Main.scala

@@ -0,0 +1,13 @@
+import java.io.File
+import java.nio.file.Files
+
+import argonaut._, Argonaut._, ArgonautShapeless._
+
+object Main extends App {
+
+  case class CC(i: Int, s: String)
+
+  val msg = CC(2, A.msg).asJson.spaces2
+
+  Files.write(new File("output").toPath, msg.getBytes("UTF-8"))
+}

plugin/src/sbt-test/sbt-coursier/inter-project/build.sbt

@@ -0,0 +1,38 @@
+
+lazy val sharedSettings = Seq(
+  scalaVersion := "2.11.8",
+  coursierCachePolicies := {
+    if (sys.props("os.name").startsWith("Windows"))
+      coursierCachePolicies.value
+    else
+      Seq(coursier.CachePolicy.ForceDownload)
+  }
+)
+
+/** Module with the same Maven coordinates as shapeless 2.3.1 */
+lazy val `shapeless-mock` = project
+  .settings(sharedSettings)
+  .settings(
+    organization := "com.chuusai",
+    name := "shapeless",
+    version := "2.3.1"
+  )
+
+lazy val a = project
+  .settings(sharedSettings)
+  .settings(
+    organization := "com.pany",
+    name := "a",
+    version := "0.0.1"
+  )
+
+/** Transitively depends on the - real - shapeless 2.3.1 */
+lazy val b = project
+  .dependsOn(a)
+  .settings(sharedSettings)
+  .settings(
+    organization := "com.pany",
+    name := "b",
+    version := "0.0.1",
+    libraryDependencies += "com.github.alexarchambault" %% "argonaut-shapeless_6.2" % "1.2.0-M1"
+  )

plugin/src/sbt-test/sbt-coursier/inter-project/project/plugins.sbt

@@ -0,0 +1,11 @@
+{
+  val pluginVersion = sys.props.getOrElse(
+    "plugin.version",
+    throw new RuntimeException(
+      """|The system property 'plugin.version' is not defined.
+         |Specify this property using the scriptedLaunchOpts -D.""".stripMargin
+    )
+  )
+
+  addSbtPlugin("io.get-coursier" % "sbt-coursier" % pluginVersion)
+}

plugin/src/sbt-test/sbt-coursier/inter-project/test

@@ -0,0 +1,3 @@
+$ delete output
+> b/run
+$ exists output