fix: move resource generation out from onLoad

build.sbt

@@ -287,6 +287,13 @@ lazy val frontend: Project = project
         ownProductDirectories ++ dependencyClasspath
       }
     ),
+    Test / resources := {
+      val main = (Test / resources).value
+      val dir = (ThisBuild / baseDirectory).value
+      val log = streams.value
+      BuildDefaults.exportProjectsInTestResources(dir, log.log, enableCache = true)
+      main
+    },
     (Test / unmanagedResources / includeFilter) := {
       new FileFilter {
         def accept(file: File): Boolean = {
@@ -942,7 +949,6 @@ val bloop = project
     releaseEarly := { () },
     (publish / skip) := true,
     crossSbtVersions := Seq(Sbt1Version, Sbt013Version),
-    commands += BuildDefaults.exportProjectsInTestResourcesCmd,
     buildIntegrationsBase := (ThisBuild / Keys.baseDirectory).value / "build-integrations",
     twitterDodo := buildIntegrationsBase.value./("build-twitter"),
     publishLocalAllModules := {

frontend/src/test/resources/compiler-plugin-allowlist/allowlist/shared/src/main/scala/hello/App.scala

@@ -5,3 +5,4 @@ object App {
     println("Allowed application was compiled successfully v3.0")
   }
 }
+

project/BuildPlugin.scala

@@ -27,6 +27,7 @@ import ch.epfl.scala.sbt.release.ReleaseEarlyPlugin.{autoImport => ReleaseEarlyK
 import sbt.internal.BuildLoader
 import sbt.librarymanagement.MavenRepository
 import build.BloopShadingPlugin.{autoImport => BloopShadingKeys}
+import sbt.util.Logger
 
 object BuildPlugin extends AutoPlugin {
   import sbt.plugins.JvmPlugin
@@ -322,7 +323,7 @@ object BuildImplementation {
     BuildKeys.schemaVersion := "4.2-refresh-3",
     (Test / Keys.testOptions) += sbt.Tests.Argument("-oD"),
     Keys.onLoadMessage := Header.intro,
-    Keys.onLoad := BuildDefaults.bloopOnLoad.value,
+    //Keys.onLoad := BuildDefaults.bloopOnLoad.value,
     (Test / Keys.publishArtifact) := false
   )
 
@@ -426,27 +427,20 @@ object BuildImplementation {
       }
     }
 
-    /**
-     * This onLoad hook will clone any repository required for the build tool integration tests.
-     * In this case, we clone kafka so that the gradle plugin unit tests can access to its directory.
-     */
-    val bloopOnLoad: Def.Initialize[State => State] = Def.setting {
-      Keys.onLoad.value.andThen { state =>
-        if (sys.env.isDefinedAt("SKIP_TEST_RESOURCES_GENERATION")) state
-        else exportProjectsInTestResources(state, enableCache = true)
-      }
-    }
-
-    def exportProjectsInTestResources(state: State, enableCache: Boolean): State = {
+    def exportProjectsInTestResources(
+        baseDir: File,
+        log: Logger,
+        enableCache: Boolean
+    ): Seq[File] = {
       import java.util.Locale
       val isWindows: Boolean =
         System.getProperty("os.name").toLowerCase(Locale.ENGLISH).contains("windows")
 
       // Generate bloop configuration files for projects we use in our test suite upfront
-      val resourcesDir = state.baseDir / "frontend" / "src" / "test" / "resources"
-      val pluginSourceDir = state.baseDir / "integrations" / "sbt-bloop" / "src" / "main"
+      val resourcesDir = baseDir / "frontend" / "src" / "test" / "resources"
+      val pluginSourceDir = baseDir / "integrations" / "sbt-bloop" / "src" / "main"
       val projectDirs = resourcesDir.listFiles().filter(_.isDirectory)
-      projectDirs.foreach { projectDir =>
+      val out = projectDirs.flatMap { projectDir =>
         val targetDir = projectDir / "target"
         val cacheDirectory = targetDir / "generation-cache-dir"
         if (sys.env.isDefinedAt("FORCE_TEST_RESOURCES_GENERATION"))
@@ -471,7 +465,7 @@ object BuildImplementation {
         import scala.sys.process.Process
 
         val generate = { (changedFiles: Set[File]) =>
-          state.log.info(s"Generating bloop configuration files for ${projectDir}")
+          log.info(s"Generating bloop configuration files for ${projectDir}")
           val cmd = {
             val isGithubAction = sys.env.get("GITHUB_WORKFLOW").nonEmpty
             if (isWindows && isGithubAction) "sh" :: "-c" :: "sbt bloopInstall" :: Nil
@@ -483,7 +477,7 @@ object BuildImplementation {
             throw new sbt.MessageOnlyException(
               s"Failed to generate bloop config for ${projectDir}."
             )
-          state.log.success(s"Generated bloop configuration files for ${projectDir}")
+          log.success(s"Generated bloop configuration files for ${projectDir}")
           changedFiles
         }
 
@@ -494,14 +488,16 @@ object BuildImplementation {
 
           cached(projectsFiles ++ pluginFiles)
         } else generate(Set.empty)
-      }
-
-      state
+      }.map(f => f.toString -> f)
+       .toMap
+       .values
+       .toList
+      println("~~~~~~~~~~~~")
+      println(out.mkString("\n"))
+      println("~~~~~~~~~~~~")
+      out
     }
 
-    val exportProjectsInTestResourcesCmd: sbt.Command =
-      sbt.Command.command("exportProjectsInTestResources")(exportProjectsInTestResources(_, false))
-
     def getStagingDirectory(state: State): File = {
       // Use the default staging directory, we don't care if the user changed it.
       val globalBase = sbt.BuildPaths.getGlobalBase(state)