add a separate workflow to test langs in parallel

.github/workflows/build-test-ci.yml

@@ -32,26 +32,12 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - uses: conda-incubator/setup-miniconda@v2
-        with:
-          auto-update-conda: true
-          python-version: ${{ matrix.python-version }}
-          mamba-version: "*"
-          channels: conda-forge
-          channel-priority: true
-
       - name: Install dependencies
         run: python -m pip install nox tomli
 
-      - name: Install compilers
-        run: mamba install c-compiler cxx-compiler fortran-compiler cmake
-
       - name: Run the tests
         run: nox --session test test-cli --python ${{ matrix.python-version }} --verbose
 
-      - name: Run the language tests
-        run: nox --non-interactive --error-on-missing-interpreter --session test-langs --python ${{ matrix.python-version }} --verbose
-
       - name: Coveralls
         if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.9'
         uses: AndreMiras/coveralls-python-action@v20201129

.github/workflows/test-langs.yml

@@ -0,0 +1,51 @@
+name: Build/Test CI
+
+on: [push, pull_request]
+
+jobs:
+  build-and-test:
+    # We want to run on external PRs, but not on our own internal PRs as they'll be run
+    # by the push to the branch. Without this if check, checks are duplicated since
+    # internal PRs match both the push and pull_request events.
+    if:
+      github.event_name == 'push' || github.event.pull_request.head.repo.full_name !=
+      github.repository
+
+    runs-on: ${{ matrix.os }}
+
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        python-version: ["3.10", "3.11", "3.12"]
+        language: ["c", "cxx", "python", "fortran"]
+
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - uses: conda-incubator/setup-miniconda@v2
+        with:
+          auto-update-conda: true
+          python-version: ${{ matrix.python-version }}
+          mamba-version: "*"
+          channels: conda-forge
+          channel-priority: true
+
+      - name: Install dependencies
+        run: python -m pip install nox tomli
+
+      - name: Install compilers
+        run: mamba install c-compiler cxx-compiler fortran-compiler cmake
+
+      - name: Run the language tests
+        run: nox -s "test-langs-${{ matrix.python-version }}(lang='${{ matrix.language }}')" --python ${{ matrix.python-version }} --verbose
+
+      - name: Coveralls
+        if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.9'
+        uses: AndreMiras/coveralls-python-action@v20201129