Trying to reproduce #641/#1676

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/build.sbt

@@ -0,0 +1,44 @@
+def customIvyPaths: Seq[Def.Setting[_]] = Seq(
+  ivyPaths := new IvyPaths((baseDirectory in ThisBuild).value, Some((baseDirectory in ThisBuild).value / "ivy-cache"))
+)
+
+lazy val packageTests = taskKey[File]("package tests")
+
+lazy val common = project.
+  settings(customIvyPaths: _*).
+  settings(
+    organization := "com.badexample",
+    name := "badexample",
+    version := "1.0-SNAPSHOT",
+    publishTo := {
+      val p = ivyPaths.value.ivyHome.get
+      Some(Resolver.file("maven-share-publish", p / "shared").mavenStyle())
+    },
+    crossVersion := CrossVersion.Disabled,
+    publishMavenStyle := true,
+    packageTests in Compile := (packageBin in Test).value,
+    artifact in (Compile, packageTests) := Artifact(name.value, "tests"),
+    addArtifact(artifact in (Compile, packageTests), packageTests in Compile)
+  )
+
+lazy val dependent = project.
+  settings(customIvyPaths: _*).
+  settings(
+    // sharedResolver didn't work.
+    resolvers += {
+      val p = ivyPaths.value.ivyHome.get
+      new MavenRepository("maven-share", p.toURL.toString + "/shared")
+    },
+    // Ignore the inter-project resolver, so we force to look remotely.
+    fullResolvers := fullResolvers.value.filterNot(_==projectResolver.value),
+    libraryDependencies += "com.badexample" % "badexample" % "1.0-SNAPSHOT" classifier("tests"),
+    libraryDependencies += "com.badexample" % "badexample" % "1.0-SNAPSHOT"
+    // updateOptions := updateOptions.value.withLatestSnapshots(true)
+  )
+
+TaskKey[Unit]("dumpResolvers") := {
+  streams.value.log.info(s" -- dependent/fullResolvers -- ")
+  (fullResolvers in dependent).value foreach { r =>
+    streams.value.log.info(s" * ${r}")
+  }
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/changes/BadCommon.scala

@@ -0,0 +1,2 @@
+object Common {
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/changes/BadTest.scala

@@ -0,0 +1,2 @@
+object Test {
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/changes/GoodCommon.scala

@@ -0,0 +1,3 @@
+object Common {
+  def name = "common"
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/changes/GoodTest.scala

@@ -0,0 +1,3 @@
+object Test {
+  def name = "test"
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/common/src/main/scala/Common.scala

@@ -0,0 +1,3 @@
+object Common {
+
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/common/src/test/scala/Test.scala

@@ -0,0 +1,2 @@
+object Test {
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/dependent/src/main/scala/User.scala

@@ -0,0 +1,4 @@
+object User {
+  println(Common.name)
+  println(Test.name)
+}

sbt/src/sbt-test/dependency-management/snapshot-classifier-resolution/test

@@ -0,0 +1,19 @@
+# Validate that a bad dependency fails the compile
+$ copy-file changes/BadCommon.scala common/src/main/scala/Common.scala
+$ copy-file changes/BadTest.scala common/src/test/scala/Test.scala
+> common/publish
+
+# Force dep resolution to be successful, then compilation to fail
+> dependent/update
+-> dependent/compile
+
+# Push new good change.
+$ copy-file changes/GoodCommon.scala common/src/main/scala/Common.scala
+$ copy-file changes/GoodTest.scala common/src/test/scala/Test.scala
+# Sleep to ensure timestamp change
+$ sleep 1000
+> common/publish
+
+# This should compile now.
+> dependent/update
+> dependent/compile