Move pony-compiler tests to dedicated CI workflow

The pony-compiler tests only need to run when the compiler library
or the pony_compiler tool itself changes, not on every PR that
touches tools. Also increases the parallel compilation test timeout
from 9s to 60s.

Author: SeanTAllen

.github/workflows/pr-pony-compiler.yml

@@ -0,0 +1,102 @@
+name: pony-compiler
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+    paths:
+      - 'src/libponyc/**'
+      - 'tools/lib/ponylang/pony_compiler/**'
+      - '.github/workflows/pr-pony-compiler.yml'
+
+concurrency:
+  group: pr-pony-compiler-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  packages: read
+
+jobs:
+  linux:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    name: Linux
+    container:
+      image: ghcr.io/ponylang/ponyc-ci-alpine3.23-builder:20260201
+      options: --user pony
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6.0.2
+      - name: Restore Libs Cache
+        id: restore-libs
+        uses: actions/cache/restore@v5.0.3
+        with:
+          path: |
+            build/libs
+            lib/llvm/src/compiler-rt/lib/builtins
+          key: libs-ghcr.io/ponylang/ponyc-ci-alpine3.23-builder:20260201-${{ hashFiles('Makefile', 'CMakeLists.txt', 'lib/CMakeLists.txt', 'lib/llvm/patches/*') }}
+      - name: Build Libs
+        if: steps.restore-libs.outputs.cache-hit != 'true'
+        run: make libs build_flags=-j8
+      - name: Build
+        run: |
+          make configure config=debug
+          make build config=debug
+      - name: Test pony-compiler
+        run: make test-pony-compiler config=debug
+
+  macos:
+    if: github.event.pull_request.draft == false
+    runs-on: macos-26
+
+    name: macOS
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6.0.2
+      - name: Restore Libs Cache
+        id: restore-libs
+        uses: actions/cache/restore@v5.0.3
+        with:
+          path: |
+            build/libs
+            lib/llvm/src/compiler-rt/lib/builtins
+          key: libs-arm64-macos-26-${{ hashFiles('Makefile', 'CMakeLists.txt', 'lib/CMakeLists.txt', 'lib/llvm/patches/*') }}
+      - name: Build Libs
+        if: steps.restore-libs.outputs.cache-hit != 'true'
+        run: make libs build_flags=-j8
+      - name: Build
+        run: |
+          make configure arch=armv8 config=debug
+          make build config=debug
+      - name: Test pony-compiler
+        run: make test-pony-compiler config=debug
+
+  windows:
+    if: github.event.pull_request.draft == false
+    runs-on: windows-2025
+    defaults:
+      run:
+        shell: pwsh
+
+    name: Windows
+    steps:
+      - name: Disable Windows Defender
+        run: Set-MpPreference -DisableRealtimeMonitoring $true
+      - name: Checkout
+        uses: actions/checkout@v6.0.2
+      - name: Restore Libs Cache
+        id: restore-libs
+        uses: actions/cache/restore@v5.0.3
+        with:
+          path: |
+            build/libs
+            lib/llvm/src/compiler-rt/lib/builtins
+          key: libs-windows-2025-${{ hashFiles('make.ps1', 'CMakeLists.txt', 'lib/CMakeLists.txt', 'lib/llvm/patches/*') }}
+      - name: Build Libs
+        if: steps.restore-libs.outputs.cache-hit != 'true'
+        run: .\make.ps1 -Command libs
+      - name: Build
+        run: |
+          .\make.ps1 -Command configure -Config Debug
+          .\make.ps1 -Command build -Config Debug
+      - name: Test pony-compiler
+        run: .\make.ps1 -Command test -Config Debug -TestsToRun pony-compiler-tests

.github/workflows/pr-tools.yml

@@ -44,8 +44,6 @@ jobs:
         run: |
           make configure config=debug
           make build config=debug
-      - name: Test pony-compiler
-        run: make test-pony-compiler config=debug
       - name: Test pony-doc
         run: make test-pony-doc config=debug
       - name: Test pony-lint
@@ -78,8 +76,6 @@ jobs:
         run: |
           make configure arch=armv8 config=debug
           make build config=debug
-      - name: Test pony-compiler
-        run: make test-pony-compiler config=debug
       - name: Test pony-doc
         run: make test-pony-doc config=debug
       - name: Test pony-lint
@@ -115,8 +111,6 @@ jobs:
         run: |
           .\make.ps1 -Command configure -Config Debug
           .\make.ps1 -Command build -Config Debug
-      - name: Test pony-compiler
-        run: .\make.ps1 -Command test -Config Debug -TestsToRun pony-compiler-tests
       - name: Test pony-doc
         run: .\make.ps1 -Command test -Config Debug -TestsToRun pony-doc-tests
       - name: Test pony-lint

tools/lib/ponylang/pony_compiler/tests/main.pony

@@ -496,7 +496,7 @@ actor ParallelCompiler
 class \nodoc\ _ParallelCompilerTest is UnitTest
   fun name(): String => "parallel/compilation"
   fun apply(h: TestHelper) =>
-    h.long_test(9000000000)
+    h.long_test(60_000_000_000)
     let source_dir = FilePath(FileAuth(h.env.root), Path.join(Path.dir(__loc.file()), "constructs"))
     for i in Range(0, 10) do
       let token: String val = i.string()