diff --git a/build.sbt b/build.sbt
index cf93ef33d..e91b6d279 100644
--- a/build.sbt
+++ b/build.sbt
@@ -130,6 +130,18 @@ lazy val core = crossProject
       import com.typesafe.tools.mima.core._
 
       Seq(
+        // Since 1.0.0-M15
+        // reworked profile activation
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Resolution.copy"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Resolution.profileActivation"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Resolution.copyWithCache"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Resolution.this"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Activation.copy"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Activation.this"),
+        ProblemFilters.exclude[MissingTypesProblem]("coursier.core.Activation$"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Activation.apply"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Resolution.profiles"),
+        ProblemFilters.exclude[DirectMissingMethodProblem]("coursier.core.Resolution.apply"),
         // Since 1.0.0-M13
         // reworked VersionConstraint
         ProblemFilters.exclude[MissingClassProblem]("coursier.core.VersionConstraint$Interval"),
diff --git a/cli/src/main/scala-2.11/coursier/cli/Helper.scala b/cli/src/main/scala-2.11/coursier/cli/Helper.scala
index c08757f3a..f952ccaf2 100644
--- a/cli/src/main/scala-2.11/coursier/cli/Helper.scala
+++ b/cli/src/main/scala-2.11/coursier/cli/Helper.scala
@@ -285,7 +285,9 @@ class Helper(
     dependencies.toSet,
     forceVersions = forceVersions,
     filter = Some(dep => keepOptional || !dep.optional),
-    profileActivation = Some(core.Resolution.userProfileActivation(userEnabledProfiles))
+    userActivations =
+      if (userEnabledProfiles.isEmpty) None
+      else Some(userEnabledProfiles.iterator.map(_ -> true).toMap)
   )
 
   val loggerFallbackMode =
diff --git a/core/shared/src/main/scala/coursier/core/Activation.scala b/core/shared/src/main/scala/coursier/core/Activation.scala
new file mode 100644
index 000000000..bf10b82d5
--- /dev/null
+++ b/core/shared/src/main/scala/coursier/core/Activation.scala
@@ -0,0 +1,131 @@
+package coursier.core
+
+import scalaz.{-\/, \/, \/-}
+
+// Maven-specific
+final case class Activation(
+  properties: Seq[(String, Option[String])],
+  os: Activation.Os,
+  jdk: Option[VersionInterval \/ Seq[Version]]
+) {
+
+  def isEmpty: Boolean = properties.isEmpty && os.isEmpty && jdk.isEmpty
+
+  def isActive(
+    currentProperties: Map[String, String],
+    osInfo: Activation.Os,
+    jdkVersion: Option[Version]
+  ): Boolean = {
+
+    def fromProperties = properties.forall {
+      case (name, valueOpt) =>
+        if (name.startsWith("!"))
+          currentProperties.get(name.drop(1)).isEmpty
+        else
+          currentProperties.get(name).exists { v =>
+            valueOpt.forall { reqValue =>
+              if (reqValue.startsWith("!"))
+                v != reqValue.drop(1)
+              else
+                v == reqValue
+            }
+          }
+    }
+
+    def fromOs = os.isActive(osInfo)
+
+    def fromJdk = jdk.forall {
+      case -\/(itv) =>
+        jdkVersion.exists(itv.contains)
+      case \/-(versions) =>
+        jdkVersion.exists(versions.contains)
+    }
+
+    !isEmpty && fromProperties && fromOs && fromJdk
+  }
+}
+
+object Activation {
+
+  case class Os(
+    arch: Option[String],
+    families: Set[String],
+    name: Option[String],
+    version: Option[String] // FIXME Could this be an interval?
+  ) {
+    def isEmpty: Boolean =
+      arch.isEmpty && families.isEmpty && name.isEmpty && version.isEmpty
+
+    def isActive(osInfo: Os): Boolean =
+      arch.forall(osInfo.arch.toSeq.contains) &&
+        families.forall { f =>
+          if (Os.knownFamilies(f))
+            osInfo.families.contains(f)
+          else
+            osInfo.name.exists(_.contains(f))
+        } &&
+        name.forall(osInfo.name.toSeq.contains) &&
+        version.forall(osInfo.version.toSeq.contains)
+  }
+
+  object Os {
+    val empty = Os(None, Set(), None, None)
+
+    // below logic adapted from https://github.com/sonatype/plexus-utils/blob/f2beca21c75084986b49b3ab7b5f0f988021dcea/src/main/java/org/codehaus/plexus/util/Os.java
+    // brought in https://github.com/alexarchambault/coursier/issues/341 by @eboto
+
+    private val standardFamilies = Set(
+      "windows",
+      "os/2",
+      "netware",
+      "mac",
+      "os/400",
+      "openvms"
+    )
+
+    private[Os] val knownFamilies = standardFamilies ++ Seq(
+      "dos",
+      "tandem",
+      "unix",
+      "win9x",
+      "z/os"
+    )
+
+    def families(name: String, pathSep: String): Set[String] = {
+
+      var families = standardFamilies.filter(f => name.indexOf(f) >= 0)
+
+      if (pathSep == ";" && name.indexOf("netware") < 0)
+        families += "dos"
+
+      if (name.indexOf("nonstop_kernel") >= 0)
+        families += "tandem"
+
+      if (pathSep == ":" && name.indexOf("openvms") < 0 && (name.indexOf("mac") < 0 || name.endsWith("x")))
+        families += "unix"
+
+      if (name.indexOf("windows") >= 0 && (name.indexOf("95") >= 0 || name.indexOf("98") >= 0 || name.indexOf("me") >= 0 || name.indexOf("ce") >= 0))
+        families += "win9x"
+
+      if (name.indexOf("z/os") >= 0 || name.indexOf("os/390") >= 0)
+        families += "z/os"
+
+      families
+    }
+
+    def fromProperties(properties: Map[String, String]): Os = {
+
+      val name = properties.get("os.name").map(_.toLowerCase)
+
+      Os(
+        properties.get("os.arch").map(_.toLowerCase),
+        (for (n <- name; sep <- properties.get("path.separator"))
+          yield families(n, sep)).getOrElse(Set()),
+        name,
+        properties.get("os.version").map(_.toLowerCase)
+      )
+    }
+  }
+
+  val empty = Activation(Nil, Os.empty, None)
+}
\ No newline at end of file
diff --git a/core/shared/src/main/scala/coursier/core/Definitions.scala b/core/shared/src/main/scala/coursier/core/Definitions.scala
index 5446e936a..3a5fc6b46 100644
--- a/core/shared/src/main/scala/coursier/core/Definitions.scala
+++ b/core/shared/src/main/scala/coursier/core/Definitions.scala
@@ -127,9 +127,6 @@ object Info {
   val empty = Info("", "", Nil, Nil, None)
 }
 
-// Maven-specific
-final case class Activation(properties: Seq[(String, Option[String])])
-
 // Maven-specific
 final case class Profile(
   id: String,
diff --git a/core/shared/src/main/scala/coursier/core/Resolution.scala b/core/shared/src/main/scala/coursier/core/Resolution.scala
index f45c3bc4a..d7b6e6438 100644
--- a/core/shared/src/main/scala/coursier/core/Resolution.scala
+++ b/core/shared/src/main/scala/coursier/core/Resolution.scala
@@ -11,25 +11,53 @@ object Resolution {
 
   type ModuleVersion = (Module, String)
 
+  def profileIsActive(
+    profile: Profile,
+    properties: Map[String, String],
+    osInfo: Activation.Os,
+    jdkVersion: Option[Version],
+    userActivations: Option[Map[String, Boolean]]
+  ): Boolean = {
+
+    val fromUserOrDefault = userActivations match {
+      case Some(activations) =>
+        activations.get(profile.id)
+      case None =>
+        if (profile.activeByDefault.toSeq.contains(true))
+          Some(true)
+        else
+          None
+    }
+
+    def fromActivation = profile.activation.isActive(properties, osInfo, jdkVersion)
+
+    val res = fromUserOrDefault.getOrElse(fromActivation)
+
+    // println(s"Profile\n$profile\n$res\n")
+
+    res
+  }
+
   /**
    * Get the active profiles of `project`, using the current properties `properties`,
-   * and `profileActivation` stating if a profile is active.
+   * and `profileActivations` stating if a profile is active.
    */
   def profiles(
     project: Project,
     properties: Map[String, String],
-    profileActivation: (String, Activation, Map[String, String]) => Boolean
-  ): Seq[Profile] = {
-
-    val activated = project.profiles
-      .filter(p => profileActivation(p.id, p.activation, properties))
-
-    def default = project.profiles
-      .filter(_.activeByDefault.toSeq.contains(true))
-
-    if (activated.isEmpty) default
-    else activated
-  }
+    osInfo: Activation.Os,
+    jdkVersion: Option[Version],
+    userActivations: Option[Map[String, Boolean]]
+  ): Seq[Profile] =
+    project.profiles.filter { profile =>
+      profileIsActive(
+        profile,
+        properties,
+        osInfo,
+        jdkVersion,
+        userActivations
+      )
+    }
 
   object DepMgmt {
     type Key = (String, String, String)
@@ -500,7 +528,9 @@ final case class Resolution(
   errorCache: Map[Resolution.ModuleVersion, Seq[String]],
   finalDependenciesCache: Map[Dependency, Seq[Dependency]],
   filter: Option[Dependency => Boolean],
-  profileActivation: Option[(String, Activation, Map[String, String]) => Boolean]
+  osInfo: Activation.Os,
+  jdkVersion: Option[Version],
+  userActivations: Option[Map[String, Boolean]]
 ) {
 
   def copyWithCache(
@@ -511,7 +541,9 @@ final case class Resolution(
     projectCache: Map[Resolution.ModuleVersion, (Artifact.Source, Project)] = projectCache,
     errorCache: Map[Resolution.ModuleVersion, Seq[String]] = errorCache,
     filter: Option[Dependency => Boolean] = filter,
-    profileActivation: Option[(String, Activation, Map[String, String]) => Boolean] = profileActivation
+    osInfo: Activation.Os = osInfo,
+    jdkVersion: Option[Version] = jdkVersion,
+    userActivations: Option[Map[String, Boolean]] = userActivations
   ): Resolution =
     copy(
       rootDependencies,
@@ -522,7 +554,9 @@ final case class Resolution(
       errorCache,
       finalDependenciesCache ++ finalDependenciesCache0.asScala,
       filter,
-      profileActivation
+      osInfo,
+      jdkVersion,
+      userActivations
     )
 
   import Resolution._
@@ -741,7 +775,9 @@ final case class Resolution(
       profiles(
         project,
         approxProperties,
-        profileActivation getOrElse defaultProfileActivation
+        osInfo,
+        jdkVersion,
+        userActivations
       ).flatMap(p => p.dependencies ++ p.dependencyManagement)
 
     val modules = withProperties(
@@ -850,7 +886,9 @@ final case class Resolution(
     val profiles0 = profiles(
       project,
       approxProperties,
-      profileActivation getOrElse defaultProfileActivation
+      osInfo,
+      jdkVersion,
+      userActivations
     )
 
     // 1.2 made from Pom.scala (TODO look at the very details?)
diff --git a/core/shared/src/main/scala/coursier/maven/Pom.scala b/core/shared/src/main/scala/coursier/maven/Pom.scala
index 866045125..f24d85923 100644
--- a/core/shared/src/main/scala/coursier/maven/Pom.scala
+++ b/core/shared/src/main/scala/coursier/maven/Pom.scala
@@ -75,7 +75,23 @@ object Pom {
         } yield (name, valueOpt)
       }
 
-    (byDefault, Activation(properties))
+    val osNodeOpt = node.children.collectFirst { case n if n.label == "os" => n }
+
+    val os = Activation.Os(
+      osNodeOpt.flatMap(n => text(n, "arch", "").toOption),
+      osNodeOpt.flatMap(n => text(n, "family", "").toOption).toSet,
+      osNodeOpt.flatMap(n => text(n, "name", "").toOption),
+      osNodeOpt.flatMap(n => text(n, "version", "").toOption)
+    )
+
+    val jdk = text(node, "jdk", "").toOption.flatMap { s =>
+      Parse.versionInterval(s).map(-\/(_))
+        .orElse(Parse.version(s).map(v => \/-(Seq(v))))
+    }
+
+    val activation = Activation(properties, os, jdk)
+
+    (byDefault, activation)
   }
 
   def profile(node: Node): String \/ Profile = {
@@ -85,7 +101,7 @@ object Pom {
 
     val xmlActivationOpt = node.children
       .find(_.label == "activation")
-    val (activeByDefault, activation) = xmlActivationOpt.fold((Option.empty[Boolean], Activation(Nil)))(profileActivation)
+    val (activeByDefault, activation) = xmlActivationOpt.fold((Option.empty[Boolean], Activation.empty))(profileActivation)
 
     val xmlDeps = node.children
       .find(_.label == "dependencies")
diff --git a/core/shared/src/main/scala/coursier/package.scala b/core/shared/src/main/scala/coursier/package.scala
index 32a0adb63..20e767b62 100644
--- a/core/shared/src/main/scala/coursier/package.scala
+++ b/core/shared/src/main/scala/coursier/package.scala
@@ -1,3 +1,4 @@
+import coursier.core.{Activation, Parse, Version}
 
 /**
  * Mainly pulls definitions from coursier.core, sometimes with default arguments.
@@ -72,7 +73,9 @@ package object coursier {
       errorCache: Map[ModuleVersion, Seq[String]] = Map.empty,
       finalDependencies: Map[Dependency, Seq[Dependency]] = Map.empty,
       filter: Option[Dependency => Boolean] = None,
-      profileActivation: Option[(String, core.Activation, Map[String, String]) => Boolean] = None
+      osInfo: Activation.Os = Activation.Os.fromProperties(sys.props.toMap),
+      jdkVersion: Option[Version] = sys.props.get("java.version").flatMap(Parse.version),
+      userActivations: Option[Map[String, Boolean]] = None
     ): Resolution =
       core.Resolution(
         rootDependencies,
@@ -83,7 +86,9 @@ package object coursier {
         errorCache,
         finalDependencies,
         filter,
-        profileActivation
+        osInfo,
+        jdkVersion,
+        userActivations
       )
   }
 
diff --git a/plugin/src/main/scala-2.10/coursier/Tasks.scala b/plugin/src/main/scala-2.10/coursier/Tasks.scala
index fd6316a32..c1d773d81 100644
--- a/plugin/src/main/scala-2.10/coursier/Tasks.scala
+++ b/plugin/src/main/scala-2.10/coursier/Tasks.scala
@@ -441,7 +441,11 @@ object Tasks {
             dep.copy(exclusions = dep.exclusions ++ exclusions)
         }.toSet,
         filter = Some(dep => !dep.optional),
-        profileActivation = Some(core.Resolution.userProfileActivation(userEnabledProfiles)),
+        userActivations =
+          if (userEnabledProfiles.isEmpty)
+            None
+          else
+            Some(userEnabledProfiles.iterator.map(_ -> true).toMap),
         forceVersions =
           // order matters here
           userForceVersions ++
@@ -677,7 +681,7 @@ object Tasks {
           currentProject,
           repositories,
           userEnabledProfiles,
-          startRes.copy(filter = None, profileActivation = None),
+          startRes.copy(filter = None),
           sbtClassifiers
         ),
         resolution
@@ -910,7 +914,7 @@ object Tasks {
       reportsCache.getOrElseUpdate(
         ReportCacheKey(
           currentProject,
-          res.copy(filter = None, profileActivation = None),
+          res.copy(filter = None),
           withClassifiers,
           sbtClassifiers
         ),
diff --git a/tests/shared/src/test/resources/resolutions/org.apache.spark/spark-core_2.11/1.3.1 b/tests/shared/src/test/resources/resolutions/org.apache.spark/spark-core_2.11/1.3.1
index b196ffc0a..5d5eca3b8 100644
--- a/tests/shared/src/test/resources/resolutions/org.apache.spark/spark-core_2.11/1.3.1
+++ b/tests/shared/src/test/resources/resolutions/org.apache.spark/spark-core_2.11/1.3.1
@@ -13,13 +13,9 @@ com.google.guava:guava:14.0.1:compile
 com.google.inject:guice:3.0:compile
 com.google.protobuf:protobuf-java:2.5.0:compile
 com.ning:compress-lzf:1.0.0:compile
-com.sun.jersey:jersey-client:1.9:compile
-com.sun.jersey:jersey-core:1.9:compile
-com.sun.jersey:jersey-grizzly2:1.9:compile
 com.sun.jersey:jersey-json:1.9:compile
 com.sun.jersey:jersey-server:1.9:compile
 com.sun.jersey.contribs:jersey-guice:1.9:compile
-com.sun.jersey.jersey-test-framework:jersey-test-framework-core:1.9:compile
 com.sun.jersey.jersey-test-framework:jersey-test-framework-grizzly2:1.9:compile
 com.sun.xml.bind:jaxb-impl:2.2.3-1:compile
 com.thoughtworks.paranamer:paranamer:2.6:compile
@@ -46,7 +42,6 @@ io.netty:netty:3.8.0.Final:compile
 io.netty:netty-all:4.0.23.Final:compile
 javax.activation:activation:1.1:compile
 javax.inject:javax.inject:1:compile
-javax.servlet:javax.servlet-api:3.0.1:compile
 javax.xml.bind:jaxb-api:2.2.2:compile
 jline:jline:0.9.94:compile
 log4j:log4j:1.2.17:compile
@@ -88,14 +83,6 @@ org.codehaus.jackson:jackson-mapper-asl:1.8.8:compile
 org.codehaus.jackson:jackson-xc:1.8.3:compile
 org.codehaus.jettison:jettison:1.1:compile
 org.eclipse.jetty.orbit:javax.servlet:3.0.0.v201112011016:compile
-org.glassfish:javax.servlet:3.1:compile
-org.glassfish.external:management-api:3.0.0-b012:compile
-org.glassfish.gmbal:gmbal-api-only:3.0.0-b023:compile
-org.glassfish.grizzly:grizzly-framework:2.1.2:compile
-org.glassfish.grizzly:grizzly-http:2.1.2:compile
-org.glassfish.grizzly:grizzly-http-server:2.1.2:compile
-org.glassfish.grizzly:grizzly-http-servlet:2.1.2:compile
-org.glassfish.grizzly:grizzly-rcm:2.1.2:compile
 org.json4s:json4s-ast_2.11:3.2.10:compile
 org.json4s:json4s-core_2.11:3.2.10:compile
 org.json4s:json4s-jackson_2.11:3.2.10:compile
diff --git a/tests/shared/src/test/scala/coursier/test/ActivationTests.scala b/tests/shared/src/test/scala/coursier/test/ActivationTests.scala
new file mode 100644
index 000000000..12a8117a6
--- /dev/null
+++ b/tests/shared/src/test/scala/coursier/test/ActivationTests.scala
@@ -0,0 +1,325 @@
+package coursier.test
+
+import coursier.core.{Activation, Parse}
+import coursier.core.Activation.Os
+import utest._
+
+import scalaz.{-\/, \/-}
+
+object ActivationTests extends TestSuite {
+
+  def parseVersion(s: String) = Parse.version(s).getOrElse(???)
+  def parseVersionInterval(s: String) = Parse.versionInterval(s).getOrElse(???)
+
+  val macOs = Os(
+    Some("x86_64"),
+    Set("mac", "unix"),
+    Some("mac os x"),
+    Some("10.12")
+  )
+
+  val jdkVersion = parseVersion("1.8.0_112")
+
+  // missing:
+  // - condition on OS or JDK, but no OS or JDK info provided (-> no match)
+  // - negated OS infos (starting with "!") - not implemented yet
+
+  val tests = TestSuite {
+    'OS - {
+      'fromProperties - {
+        'MacOSX - {
+          val props = Map(
+            "os.arch" -> "x86_64",
+            "os.name" -> "Mac OS X",
+            "os.version" -> "10.12",
+            "path.separator" -> ":"
+          )
+
+          val expectedOs = Os(
+            Some("x86_64"),
+            Set("mac", "unix"),
+            Some("mac os x"),
+            Some("10.12")
+          )
+
+          val os = Os.fromProperties(props)
+
+          assert(os == expectedOs)
+        }
+
+        'linuxPi - {
+          val props = Map(
+            "os.arch" -> "arm",
+            "os.name" -> "Linux",
+            "os.version" -> "4.1.13-v7+",
+            "path.separator" -> ":"
+          )
+
+          val expectedOs = Os(
+            Some("arm"),
+            Set("unix"),
+            Some("linux"),
+            Some("4.1.13-v7+")
+          )
+
+          val os = Os.fromProperties(props)
+
+          assert(os == expectedOs)
+        }
+      }
+
+      'active - {
+
+        'arch - {
+          val activation = Os(Some("x86_64"), Set(), None, None)
+
+          val isActive = activation.isActive(macOs)
+
+          assert(isActive)
+        }
+
+        'wrongArch - {
+          val activation = Os(Some("arm"), Set(), None, None)
+
+          val isActive = activation.isActive(macOs)
+
+          assert(!isActive)
+        }
+
+        'family - {
+          val activation = Os(None, Set("mac"), None, None)
+
+          val isActive = activation.isActive(macOs)
+
+          assert(isActive)
+        }
+
+        'wrongFamily - {
+          val activation = Os(None, Set("windows"), None, None)
+
+          val isActive = activation.isActive(macOs)
+
+          assert(!isActive)
+        }
+
+        'name - {
+          val activation = Os(None, Set(), Some("mac os x"), None)
+
+          val isActive = activation.isActive(macOs)
+
+          assert(isActive)
+        }
+
+        'wrongName - {
+          val activation = Os(None, Set(), Some("linux"), None)
+
+          val isActive = activation.isActive(macOs)
+
+          assert(!isActive)
+        }
+
+        'version - {
+          val activation = Os(None, Set(), None, Some("10.12"))
+
+          val isActive = activation.isActive(macOs)
+
+          assert(isActive)
+        }
+
+        'wrongVersion - {
+          val activation = Os(None, Set(), None, Some("10.11"))
+
+          val isActive = activation.isActive(macOs)
+
+          assert(!isActive)
+        }
+      }
+    }
+
+    'properties - {
+      val activation = Activation.empty.copy(
+        properties = Seq(
+          "required" -> None,
+          "requiredWithValue" -> Some("foo"),
+          "requiredWithNegValue" -> Some("!bar")
+        )
+      )
+
+      'match - {
+        val isActive = activation.isActive(
+          Map(
+            "required" -> "a",
+            "requiredWithValue" -> "foo",
+            "requiredWithNegValue" -> "baz"
+          ),
+          Os.empty,
+          None
+        )
+
+        assert(isActive)
+      }
+
+      'noMatch - {
+        * - {
+          val isActive = activation.isActive(
+            Map(
+              "requiredWithValue" -> "foo",
+              "requiredWithNegValue" -> "baz"
+            ),
+            Os.empty,
+            None
+          )
+
+          assert(!isActive)
+        }
+
+        * - {
+          val isActive = activation.isActive(
+            Map(
+              "required" -> "a",
+              "requiredWithValue" -> "fooz",
+              "requiredWithNegValue" -> "baz"
+            ),
+            Os.empty,
+            None
+          )
+
+          assert(!isActive)
+        }
+
+        * - {
+          val isActive = activation.isActive(
+            Map(
+              "required" -> "a",
+              "requiredWithValue" -> "foo",
+              "requiredWithNegValue" -> "bar"
+            ),
+            Os.empty,
+            None
+          )
+
+          assert(!isActive)
+        }
+      }
+    }
+
+    'jdkVersion - {
+
+      'match - {
+        'exactVersion - {
+          val activation = Activation(
+            Nil,
+            Os.empty,
+            Some(\/-(Seq(parseVersion("1.8.0_112"))))
+          )
+
+          val isActive = activation.isActive(Map(), Os.empty, Some(jdkVersion))
+
+          assert(isActive)
+        }
+
+        'exactVersionSeveral - {
+          val activation = Activation(
+            Nil,
+            Os.empty,
+            Some(\/-(Seq(parseVersion("1.8.0_102"), parseVersion("1.8.0_112"))))
+          )
+
+          val isActive = activation.isActive(Map(), Os.empty, Some(jdkVersion))
+
+          assert(isActive)
+        }
+
+
+        'wrongExactVersion - {
+          val activation = Activation(
+            Nil,
+            Os.empty,
+            Some(\/-(Seq(parseVersion("1.8.0_102"))))
+          )
+
+          val isActive = activation.isActive(Map(), Os.empty, Some(jdkVersion))
+
+          assert(!isActive)
+        }
+
+
+        'wrongExactVersionSeveral - {
+          val activation = Activation(
+            Nil,
+            Os.empty,
+            Some(\/-(Seq(parseVersion("1.8.0_92"), parseVersion("1.8.0_102"))))
+          )
+
+          val isActive = activation.isActive(Map(), Os.empty, Some(jdkVersion))
+
+          assert(!isActive)
+        }
+
+        'versionInterval - {
+          val activation = Activation(
+            Nil,
+            Os.empty,
+            Some(-\/(parseVersionInterval("[1.8,)")))
+          )
+
+          val isActive = activation.isActive(Map(), Os.empty, Some(jdkVersion))
+
+          assert(isActive)
+        }
+
+        'wrongVersionInterval - {
+          val activation = Activation(
+            Nil,
+            Os.empty,
+            Some(-\/(parseVersionInterval("[1.7,1.8)")))
+          )
+
+          val isActive = activation.isActive(Map(), Os.empty, Some(jdkVersion))
+
+          assert(!isActive)
+        }
+      }
+    }
+
+    'all - {
+      val activation = Activation(
+        Seq(
+          "required" -> None,
+          "requiredWithValue" -> Some("foo"),
+          "requiredWithNegValue" -> Some("!bar")
+        ),
+        Os(None, Set("mac"), None, None),
+        Some(-\/(parseVersionInterval("[1.8,)")))
+      )
+
+      'match - {
+        val isActive = activation.isActive(
+          Map(
+            "required" -> "a",
+            "requiredWithValue" -> "foo",
+            "requiredWithNegValue" -> "baz"
+          ),
+          macOs,
+          Some(jdkVersion)
+        )
+
+        assert(isActive)
+      }
+
+      'noMatch - {
+        val isActive = activation.isActive(
+          Map(
+            "requiredWithValue" -> "foo",
+            "requiredWithNegValue" -> "baz"
+          ),
+          macOs,
+          Some(jdkVersion)
+        )
+
+        assert(!isActive)
+      }
+    }
+  }
+
+}
diff --git a/tests/shared/src/test/scala/coursier/test/CentralTests.scala b/tests/shared/src/test/scala/coursier/test/CentralTests.scala
index b6a3a27bd..addecc379 100644
--- a/tests/shared/src/test/scala/coursier/test/CentralTests.scala
+++ b/tests/shared/src/test/scala/coursier/test/CentralTests.scala
@@ -19,16 +19,14 @@ object CentralTests extends TestSuite {
     deps: Set[Dependency],
     filter: Option[Dependency => Boolean] = None,
     extraRepo: Option[Repository] = None,
-    profiles: Set[String] = Set.empty
+    profiles: Option[Set[String]] = None
   ) = {
     val repositories0 = extraRepo.toSeq ++ repositories
 
     Resolution(
       deps,
       filter = filter,
-      profileActivation = Some(
-        core.Resolution.userProfileActivation(profiles)
-      )
+      userActivations = profiles.map(_.iterator.map(_ -> true).toMap)
     )
       .process
       .run(repositories0)
@@ -40,7 +38,7 @@ object CentralTests extends TestSuite {
     version: String,
     extraRepo: Option[Repository] = None,
     configuration: String = "",
-    profiles: Set[String] = Set.empty
+    profiles: Option[Set[String]] = None
   ) =
     async {
       val attrPathPart =
@@ -157,7 +155,7 @@ object CentralTests extends TestSuite {
     'logback - {
       async {
         val dep = Dependency(Module("ch.qos.logback", "logback-classic"), "1.1.3")
-        val res = await(resolve(Set(dep))).clearCaches.clearProfileActivation
+        val res = await(resolve(Set(dep))).clearCaches
 
         val expected = Resolution(
           rootDependencies = Set(dep),
@@ -173,7 +171,7 @@ object CentralTests extends TestSuite {
     'asm - {
       async {
         val dep = Dependency(Module("org.ow2.asm", "asm-commons"), "5.0.2")
-        val res = await(resolve(Set(dep))).clearCaches.clearProfileActivation
+        val res = await(resolve(Set(dep))).clearCaches
 
         val expected = Resolution(
           rootDependencies = Set(dep),
@@ -190,7 +188,7 @@ object CentralTests extends TestSuite {
       async {
         val dep = Dependency(Module("joda-time", "joda-time"), "[2.2,2.8]")
         val res0 = await(resolve(Set(dep)))
-        val res = res0.clearCaches.clearProfileActivation
+        val res = res0.clearCaches
 
         val expected = Resolution(
           rootDependencies = Set(dep),
@@ -209,7 +207,7 @@ object CentralTests extends TestSuite {
       resolutionCheck(
         Module("org.apache.spark", "spark-core_2.11"),
         "1.3.1",
-        profiles = Set("hadoop-2.2")
+        profiles = Some(Set("hadoop-2.2"))
       )
     }
 
diff --git a/tests/shared/src/test/scala/coursier/test/package.scala b/tests/shared/src/test/scala/coursier/test/package.scala
index 7a2266b6d..2ed9fbb30 100644
--- a/tests/shared/src/test/scala/coursier/test/package.scala
+++ b/tests/shared/src/test/scala/coursier/test/package.scala
@@ -23,15 +23,13 @@ package object test {
       )
     def clearFilter: Resolution =
       underlying.copy(filter = None)
-    def clearProfileActivation: Resolution =
-      underlying.copy(profileActivation = None)
   }
 
   object Profile {
     type Activation = core.Activation
     object Activation {
       def apply(properties: Seq[(String, Option[String])] = Nil): Activation =
-        core.Activation(properties)
+        core.Activation(properties, coursier.core.Activation.Os.empty, None)
     }
 
     def apply(