chore: drop the old sbt-test infrastructure

Author: hamzaremmal

.github/workflows/ci.yaml

@@ -347,51 +347,6 @@ jobs:
         if: ${{ always() }}
         run: cat community-build/dotty-community-build-deps || true
 
-  test_sbt:
-    runs-on: [self-hosted, Linux]
-    container:
-      image: lampepfl/dotty:2024-10-18
-      options: --cpu-shares 4096
-      volumes:
-        - ${{ github.workspace }}/../../cache/sbt:/root/.sbt
-        - ${{ github.workspace }}/../../cache/ivy:/root/.ivy2/cache
-        - ${{ github.workspace }}/../../cache/general:/root/.cache
-    if: "github.event_name == 'schedule' && github.repository == 'scala/scala3'
-         || github.event_name == 'push'
-         || (
-           github.event_name == 'pull_request'
-           && !contains(github.event.pull_request.body, '[skip ci]')
-           && !contains(github.event.pull_request.body, '[skip test_sbt]')
-         )
-         || (
-           github.event_name == 'workflow_dispatch'
-           && github.repository == 'scala/scala3'
-         )"
-
-    steps:
-      - name: Set JDK 17 as default
-        run: echo "/usr/lib/jvm/java-17-openjdk-amd64/bin" >> $GITHUB_PATH
-
-      - name: Reset existing repo
-        run: |
-          git config --global --add safe.directory $GITHUB_WORKSPACE
-          git -c "http.https://github.com/.extraheader=" fetch --recurse-submodules=no "https://github.com/scala/scala3" && git reset --hard FETCH_HEAD || true
-
-      - name: Checkout cleanup script
-        uses: actions/checkout@v5
-
-      - name: Cleanup
-        run: .github/workflows/cleanup.sh
-
-      - name: Git Checkout
-        uses: actions/checkout@v5
-
-      - name: Add SBT proxy repositories
-        run: cp -vf .github/workflows/repositories /root/.sbt/ ; true
-
-      - name: Test sbt
-        run: ./project/scripts/sbt "sbt-test/scripted"
-
   publish_release:
     permissions:
       contents: write  # for GH CLI to create a release

build.sbt

@@ -54,7 +54,6 @@ val sjsSandbox = Build.sjsSandbox
 val sjsJUnitTests = Build.sjsJUnitTests
 val sjsCompilerTests = Build.sjsCompilerTests
 
-val `sbt-test` = Build.`sbt-test`
 val `sbt-test-new` = Build.`sbt-test-new`
 
 inThisBuild(Build.thisBuildSettings)

project/Build.scala

@@ -3428,47 +3428,6 @@ object Build {
       BuildInfoPlugin.buildInfoScopedSettings(Test),
     )
 
-  // various scripted sbt tests
-  lazy val `sbt-test` = project.in(file("sbt-test")).
-    enablePlugins(ScriptedPlugin).
-    settings(commonSettings).
-    settings(
-      sbtTestDirectory := baseDirectory.value,
-      target := baseDirectory.value / ".." / "out" / name.value,
-
-      // The batch mode accidentally became the default with no way to disable
-      // it in sbt 1.4 (https://github.com/sbt/sbt/issues/5913#issuecomment-716003195).
-      // We enable it explicitly here to make it clear that we're using it.
-      scriptedBatchExecution := true,
-
-      scriptedLaunchOpts ++= Seq(
-        "-Dplugin.version=" + version.value,
-        "-Dplugin.scalaVersion=" + dottyVersion,
-        "-Dplugin.scala2Version=" + stdlibVersion(Bootstrapped),
-        "-Dplugin.scalaJSVersion=" + scalaJSVersion,
-        "-Dsbt.boot.directory=" + ((ThisBuild / baseDirectory).value / ".sbt-scripted").getAbsolutePath // Workaround sbt/sbt#3469
-      ),
-      // Pass along ivy home and repositories settings to sbt instances run from the tests
-      scriptedLaunchOpts ++= {
-        val repositoryPath = (io.Path.userHome / ".sbt" / "repositories").absolutePath
-        s"-Dsbt.repository.config=$repositoryPath" ::
-        ivyPaths.value.ivyHome.map("-Dsbt.ivy.home=" + _.getAbsolutePath).toList
-      },
-      scriptedBufferLog := true,
-      scripted := scripted.dependsOn(
-        (`scala3-sbt-bridge` / publishLocalBin),
-        (`scala3-interfaces` / publishLocalBin),
-        (`scala3-compiler-bootstrapped` / publishLocalBin),
-        (`scala3-library-bootstrapped` / publishLocalBin),
-        (`scala3-library-bootstrappedJS` / publishLocalBin),
-        (`tasty-core-bootstrapped` / publishLocalBin),
-        (`scala3-staging` / publishLocalBin),
-        (`scala3-tasty-inspector` / publishLocalBin),
-        (`scaladoc` / publishLocalBin),
-        (`scala3-bootstrapped` / publishLocalBin) // Needed because sbt currently hardcodes the dotty artifact
-      ).evaluated
-    )
-
   val prepareCommunityBuild = taskKey[Unit]("Publish local the compiler and the sbt plugin. Also store the versions of the published local artefacts in two files, community-build/{scala3-bootstrapped.version,sbt-injected-plugins}.")
 
   lazy val `community-build` = project.in(file("community-build")).