.

.github/actions/post-build-setup/action.yml

@@ -14,10 +14,7 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: actions/setup-java@v4
-      with:
-        java-version: ${{ inputs.java-version }}
-        distribution: temurin
+    - run: "echo temurin:${{ inputs.java-version }} > .mill-jvm-version"
 
     # Need to fix cached artifact file permissions because github actions screws it up
     # https://github.com/actions/upload-artifact/issues/38

.github/workflows/pre-build.yml

@@ -21,10 +21,7 @@ jobs:
     runs-on: ${{ inputs.os }}
     timeout-minutes: ${{ inputs.timeout-minutes }}
     steps:
-      - uses: actions/setup-java@v4
-        with:
-          java-version: ${{ inputs.java-version }}
-          distribution: temurin
+      - run: "echo temurin:${{ inputs.java-version }} > .mill-jvm-version"
 
       - uses: actions/checkout@v4
         with:

.github/workflows/publish-artifacts.yml

@@ -33,10 +33,7 @@ jobs:
 
       - uses: coursier/cache-action@v6
 
-      - uses: actions/setup-java@v4
-        with:
-          java-version: '11'
-          distribution: temurin
+      - run: "echo temurin:11 > .mill-jvm-version"
 
       - run: ./mill -i __.publishArtifacts
 
@@ -81,10 +78,7 @@ jobs:
 
       - uses: coursier/cache-action@v6
 
-      - uses: actions/setup-java@v4
-        with:
-          java-version: '11'
-          distribution: temurin
+      - run: "echo temurin:11 > .mill-jvm-version"
 
       - run: ./mill -i mill.scalalib.PublishModule/
 
@@ -119,10 +113,7 @@ jobs:
       - uses: actions/checkout@v4
         with: { fetch-depth: 0 }
 
-      - uses: actions/setup-java@v4
-        with:
-          java-version: '11'
-          distribution: temurin
+      - run: "echo temurin:11 > .mill-jvm-version"
 
       - run: ./mill -i mill.scalalib.PublishModule/ --publishArtifacts dist.native.publishArtifacts
 
@@ -151,9 +142,6 @@ jobs:
 
       - uses: coursier/cache-action@v6
 
-      - uses: actions/setup-java@v4
-        with:
-          java-version: '11'
-          distribution: temurin
+      - run: "echo temurin:11 > .mill-jvm-version"
 
       - run: ./mill -i dist.uploadToGithub --authKey $REPO_ACCESS_TOKEN

.github/workflows/publish-docs.yml

@@ -27,9 +27,6 @@ jobs:
 
       - uses: coursier/cache-action@v6
 
-      - uses: actions/setup-java@v4
-        with:
-          java-version: '11'
-          distribution: temurin
+      - run: "echo temurin:11 > .mill-jvm-version"
 
       - run: ci/publish-docs.sh

.github/workflows/run-tests.yml

@@ -1,220 +1,217 @@
 # Uncommment this to replace the rest of the file when you want to debug stuff in CI
-name: Run Debug
-
-on:
-  push:
-  pull_request:
-  workflow_dispatch:
-
-jobs:
-  debug-windows:
-#    runs-on: ubuntu-latest
-    runs-on: windows-latest
-    steps:
-      - uses: actions/checkout@v4
-        with: { fetch-depth: 1 }
-
-      - run: ./mill 'integration.feature[launcher-old-versions].packaged.fork.test'
-        env:
-          COURSIER_ARCHIVE_CACHE: "C:/coursier-arc"
-
-  debug-ubuntu:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with: { fetch-depth: 1 }
-
-      - run: ./mill 'integration.feature[launcher-old-versions].packaged.fork.test'
-
-#name: Run Tests
-#
-## We run full CI on push builds to main and on all pull requests
-##
-## Manual builds (workflow_dispatch) to the main branch are also published
-##
-## To maximize bug-catching changes while keeping CI times reasonable, we run:
-## - All tests on Linux/Java17
-## - Fewer tests on Linux/Java11 and Windows/Java17
-## - Fewest tests on Windows/Java11
+#name: Run Debug
 #
 #on:
 #  push:
 #  pull_request:
 #  workflow_dispatch:
 #
-## cancel older runs of a pull request;
-## this will not cancel anything for normal git pushes
-#concurrency:
-#  group: cancel-old-pr-runs-${{ github.workflow }}-${{ github.head_ref || github.run_id }}
-#  cancel-in-progress: true
-#
 #jobs:
-#  # Jobs are listed in rough order of priority: if multiple jobs fail, the first job
-#  # in the list should be the one that's most worth looking into
-#  build-linux:
-#    uses: ./.github/workflows/pre-build.yml
-#    with:
-#      os: ubuntu-latest
-#
-#  build-windows:
-#    uses: ./.github/workflows/pre-build.yml
-#    with:
-#      os: windows-latest
-#
-#  test-docs:
-#    runs-on: ubuntu-latest
+#  debug-windows:
+##    runs-on: ubuntu-latest
+#    runs-on: windows-latest
 #    steps:
 #      - uses: actions/checkout@v4
-#        with: { fetch-depth: 0 }
+#        with: { fetch-depth: 1 }
 #
-#      - run: ./mill -i docs.githubPages + docs.checkBrokenLinks
+#      - run: ./mill 'integration.feature[launcher-old-versions].packaged.fork.test'
+#        env:
+#          COURSIER_ARCHIVE_CACHE: "C:/coursier-arc"
 #
-#  mac:
-#    runs-on: macos-latest
+#  debug-ubuntu:
+#    runs-on: ubuntu-latest
 #    steps:
 #      - uses: actions/checkout@v4
-#        with: { fetch-depth: 0 }
-#
-#      - uses: actions/setup-java@v4
-#        with:
-#          distribution: 'temurin'
-#          java-version: '17'
-#
-#      - run: ./mill -i example.javalib.basic.__.local.server.test
-#
-#  linux:
-#    needs: build-linux
-#    strategy:
-#      fail-fast: false
-#      matrix:
-#
-#        include:
-#          # For most tests, run them arbitrarily on Java 11 or Java 17 on Linux, and
-#          # on the opposite version on Windows below, so we get decent coverage of
-#          # each test on each Java version and each operating system
-#          # We also try to group tests together to manually balance out the runtimes of each jobs
-#          - java-version: 17
-#            millargs: "'{main,scalalib,testrunner,bsp,testkit}.__.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 11
-#            millargs: "'{scalajslib,scalanativelib,kotlinlib,pythonlib,javascriptlib}.__.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 17
-#            millargs: "contrib.__.test"
-#            install-android-sdk: false
-#
-#          - java-version: 17 # Run this with Mill native launcher as a smoketest
-#            millargs: "'example.javalib.__.native.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 17
-#            millargs: "'example.scalalib.__.local.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 17
-#            millargs: "'example.kotlinlib.__.local.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 17
-#            millargs: "'example.android.__.local.server.test'"
-#            install-android-sdk: true
-#
-#          - java-version: 17
-#            millargs: "'example.{pythonlib,javascriptlib}.__.local.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 11
-#            millargs: "'example.thirdparty[{mockito,acyclic,commons-io}].local.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 17
-#            millargs: "'example.thirdparty[{fansi,jimfs,netty,gatling}].local.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: '17'
-#            millargs: "'example.thirdparty[arrow].local.server.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 11
-#            millargs: "'example.{cli,fundamentals,depth,extending}.__.local.server.test'"
-#            install-android-sdk: false
-#            # Most of these integration tests should not depend on which mode they
-#            # are run in, so just run them in `local`
-#          - java-version: '17'
-#            millargs: "'integration.{failure,feature,ide}.__.native.server.test'"
-#            install-android-sdk: false
-#            # These invalidation tests need to be exercised in both execution modes
-#            # to make sure they work with and without -i/--no-server being passed
-#          - java-version: 17
-#            millargs: "'integration.invalidation.__.packaged.fork.test'"
-#            install-android-sdk: false
-#
-#          - java-version: 17
-#            millargs: "'integration.invalidation.__.packaged.server.test'"
-#            install-android-sdk: false
-#
-#    uses: ./.github/workflows/post-build-selective.yml
-#    with:
-#      install-android-sdk: ${{ matrix.install-android-sdk }}
-#      java-version: ${{ matrix.java-version }}
-#      millargs: ${{ matrix.millargs }}
-#
-#  windows:
-#    needs: build-windows
-#    strategy:
-#      fail-fast: false
-#      matrix:
-#        include:
-#          # just run a subset of examples/ on Windows, because for some reason running
-#          # the whole suite can take hours on windows v.s. half an hour on linux
-#          - java-version: 11
-#            millargs: '"{main,scalalib,bsp}.__.test"'
-#
-#          - java-version: 11
-#            millargs: '"example.scalalib.{basic,publishing}.__.packaged.fork.test"'
-#
-#          - java-version: 17
-#            millargs: "'integration.{feature,failure}.__.packaged.fork.test'"
-#
-#          - java-version: 11
-#            millargs: "'integration.invalidation.__.packaged.server.test'"
-#
-#          - java-version: 11
-#            millargs: "contrib.__.test"
-#
-#    uses: ./.github/workflows/post-build-selective.yml
-#    with:
-#      os: windows-latest
-#      java-version: ${{ matrix.java-version }}
-#      millargs: ${{ matrix.millargs }}
-#      # Provide a shorter coursier archive folder to avoid hitting path-length bugs when
-#      # running the graal native image binary on windows
-#      coursierarchive: "C:/coursier-arc"
+#        with: { fetch-depth: 1 }
 #
-#  itest:
-#    needs: build-linux
-#    strategy:
-#      fail-fast: false
-#      matrix:
-#        include:
-#          # bootstrap tests
-#          - java-version: 11 # Have one job on oldest JVM
-#            buildcmd: ci/test-mill-dev.sh && ci/test-mill-release.sh && ./mill -i -k __.ivyDepsTree && ./mill -i -k __.ivyDepsTree --withRuntime
-#          - java-version: 17 # Have one job on default JVM
-#            buildcmd: ci/test-mill-bootstrap.sh
+#      - run: ./mill 'integration.feature[launcher-old-versions].packaged.fork.test'
+
+name: Run Tests
+
+# We run full CI on push builds to main and on all pull requests
 #
-#    uses: ./.github/workflows/post-build-raw.yml
-#    with:
-#      java-version: ${{ matrix.java-version }}
-#      buildcmd: ${{ matrix.buildcmd }}
+# Manual builds (workflow_dispatch) to the main branch are also published
 #
-#  # Scalafmt, Mima, and Scalafix job runs last because it's the least important:
-#  # usually just an automated or mechanical manual fix to do before merging
-#  lint-autofix:
-#    needs: build-linux
-#    uses: ./.github/workflows/post-build-raw.yml
-#    with:
-#      java-version: '17'
-#      buildcmd: ./mill -i mill.scalalib.scalafmt.ScalafmtModule/checkFormatAll __.sources + __.mimaReportBinaryIssues + __.fix --check + mill.javalib.palantirformat.PalantirFormatModule/ --check + mill.kotlinlib.ktlint.KtlintModule/checkFormatAll
+# To maximize bug-catching changes while keeping CI times reasonable, we run:
+# - All tests on Linux/Java17
+# - Fewer tests on Linux/Java11 and Windows/Java17
+# - Fewest tests on Windows/Java11
+
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+
+# cancel older runs of a pull request;
+# this will not cancel anything for normal git pushes
+concurrency:
+  group: cancel-old-pr-runs-${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  # Jobs are listed in rough order of priority: if multiple jobs fail, the first job
+  # in the list should be the one that's most worth looking into
+  build-linux:
+    uses: ./.github/workflows/pre-build.yml
+    with:
+      os: ubuntu-latest
+
+  build-windows:
+    uses: ./.github/workflows/pre-build.yml
+    with:
+      os: windows-latest
+
+  test-docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with: { fetch-depth: 0 }
+
+      - run: ./mill -i docs.githubPages + docs.checkBrokenLinks
+
+  mac:
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+        with: { fetch-depth: 0 }
+
+      - run: "echo temurin:17 > .mill-jvm-version"
+
+      - run: ./mill -i example.javalib.basic.__.local.server.test
+
+  linux:
+    needs: build-linux
+    strategy:
+      fail-fast: false
+      matrix:
+
+        include:
+          # For most tests, run them arbitrarily on Java 11 or Java 17 on Linux, and
+          # on the opposite version on Windows below, so we get decent coverage of
+          # each test on each Java version and each operating system
+          # We also try to group tests together to manually balance out the runtimes of each jobs
+          - java-version: 17
+            millargs: "'{main,scalalib,testrunner,bsp,testkit}.__.test'"
+            install-android-sdk: false
+
+          - java-version: 11
+            millargs: "'{scalajslib,scalanativelib,kotlinlib,pythonlib,javascriptlib}.__.test'"
+            install-android-sdk: false
+
+          - java-version: 17
+            millargs: "contrib.__.test"
+            install-android-sdk: false
+
+          - java-version: 17 # Run this with Mill native launcher as a smoketest
+            millargs: "'example.javalib.__.native.server.test'"
+            install-android-sdk: false
+
+          - java-version: 17
+            millargs: "'example.scalalib.__.local.server.test'"
+            install-android-sdk: false
+
+          - java-version: 17
+            millargs: "'example.kotlinlib.__.local.server.test'"
+            install-android-sdk: false
+
+          - java-version: 17
+            millargs: "'example.android.__.local.server.test'"
+            install-android-sdk: true
+
+          - java-version: 17
+            millargs: "'example.{pythonlib,javascriptlib}.__.local.server.test'"
+            install-android-sdk: false
+
+          - java-version: 11
+            millargs: "'example.thirdparty[{mockito,acyclic,commons-io}].local.server.test'"
+            install-android-sdk: false
+
+          - java-version: 17
+            millargs: "'example.thirdparty[{fansi,jimfs,netty,gatling}].local.server.test'"
+            install-android-sdk: false
+
+          - java-version: '17'
+            millargs: "'example.thirdparty[arrow].local.server.test'"
+            install-android-sdk: false
+
+          - java-version: 11
+            millargs: "'example.{cli,fundamentals,depth,extending}.__.local.server.test'"
+            install-android-sdk: false
+            # Most of these integration tests should not depend on which mode they
+            # are run in, so just run them in `local`
+          - java-version: '17'
+            millargs: "'integration.{failure,feature,ide}.__.native.server.test'"
+            install-android-sdk: false
+            # These invalidation tests need to be exercised in both execution modes
+            # to make sure they work with and without -i/--no-server being passed
+          - java-version: 17
+            millargs: "'integration.invalidation.__.packaged.fork.test'"
+            install-android-sdk: false
+
+          - java-version: 17
+            millargs: "'integration.invalidation.__.packaged.server.test'"
+            install-android-sdk: false
+
+    uses: ./.github/workflows/post-build-selective.yml
+    with:
+      install-android-sdk: ${{ matrix.install-android-sdk }}
+      java-version: ${{ matrix.java-version }}
+      millargs: ${{ matrix.millargs }}
+
+  windows:
+    needs: build-windows
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # just run a subset of examples/ on Windows, because for some reason running
+          # the whole suite can take hours on windows v.s. half an hour on linux
+          - java-version: 11
+            millargs: '"{main,scalalib,bsp}.__.test"'
+
+          - java-version: 11
+            millargs: '"example.scalalib.{basic,publishing}.__.packaged.fork.test"'
+
+          - java-version: 17
+            millargs: "'integration.{feature,failure}.__.packaged.fork.test'"
+
+          - java-version: 11 # Run this with Mill native launcher as a smoketest
+            millargs: "'integration.invalidation.__.native.server.test'"
+
+          - java-version: 11
+            millargs: "contrib.__.test"
+
+    uses: ./.github/workflows/post-build-selective.yml
+    with:
+      os: windows-latest
+      java-version: ${{ matrix.java-version }}
+      millargs: ${{ matrix.millargs }}
+      # Provide a shorter coursier archive folder to avoid hitting path-length bugs when
+      # running the graal native image binary on windows
+      coursierarchive: "C:/coursier-arc"
+
+  itest:
+    needs: build-linux
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          # bootstrap tests
+          - java-version: 11 # Have one job on oldest JVM
+            buildcmd: ci/test-mill-dev.sh && ci/test-mill-release.sh && ./mill -i -k __.ivyDepsTree && ./mill -i -k __.ivyDepsTree --withRuntime
+          - java-version: 17 # Have one job on default JVM
+            buildcmd: ci/test-mill-bootstrap.sh
+
+    uses: ./.github/workflows/post-build-raw.yml
+    with:
+      java-version: ${{ matrix.java-version }}
+      buildcmd: ${{ matrix.buildcmd }}
+
+  # Scalafmt, Mima, and Scalafix job runs last because it's the least important:
+  # usually just an automated or mechanical manual fix to do before merging
+  lint-autofix:
+    needs: build-linux
+    uses: ./.github/workflows/post-build-raw.yml
+    with:
+      java-version: '17'
+      buildcmd: ./mill -i mill.scalalib.scalafmt.ScalafmtModule/checkFormatAll __.sources + __.mimaReportBinaryIssues + __.fix --check + mill.javalib.palantirformat.PalantirFormatModule/ --check + mill.kotlinlib.ktlint.KtlintModule/checkFormatAll