Refactor out repeated code

Author: Joseph-Edwards

.github/workflows/tests.yml

@@ -6,73 +6,25 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  ubuntu:
+  run-tests:
+    name: ${{ matrix.os }}-${{ matrix.python_version }}
     strategy:
       fail-fast: false
       matrix:
         python_version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
-    runs-on: ubuntu-latest
+        os: [ubuntu-latest, macOS-latest]
+        include:
+          - os: ubuntu-latest
+            compiler: g++
+          - os: macOS-latest
+            compiler: clang++
+    runs-on: ${{ matrix.os }}
     timeout-minutes: 15
     defaults:
       run:
         shell: bash -l {0}
     env:
-      CXX: "ccache g++"
-      CXXFLAGS: "-O2 -g"
-    steps:
-      - uses: actions/checkout@v4
-      - name: "Create micromamba environment"
-        uses: mamba-org/setup-micromamba@v1
-        with:
-          environment-name: libsemigroups
-          create-args: >-
-            python=${{ matrix.python_version }}
-            fmt
-      - name: "Set environment variables . . ."
-        run: |
-          echo "PKG_CONFIG_PATH=$MAMBA_ROOT_PREFIX/envs/libsemigroups/lib/pkgconfig:$MAMBA_ROOT_PREFIX/envs/libsemigroups/share/pkgconfig:/usr/local/lib/pkgconfig" >> $GITHUB_ENV
-          echo "LD_LIBRARY_PATH=$MAMBA_ROOT_PREFIX/envs/libsemigroups/lib:/usr/local/lib" >> $GITHUB_ENV
-      - name: "Setup ccache . . ."
-        uses: Chocobo1/setup-ccache-action@v1
-        with:
-          update_packager_index: false
-          install_ccache: true
-      - name: "Install libsemigroups . . ."
-        run: |
-          git clone --depth 1 --branch main https://github.com/libsemigroups/libsemigroups.git
-          cd libsemigroups
-          ./autogen.sh && ./configure CXX="$CXX" CXXFLAGS="$CXXFLAGS" --disable-hpcombi --with-external-fmt && sudo make install -j8
-          ccache -s
-      - name: "Python version . . ."
-        run: |
-          python --version
-          pip3 --version
-      - name: "Pip installing requirements.txt . . ."
-        run: |
-          pip3 install -r requirements.txt
-      - name: "Pip3 installing libsemigroups_pybind11 . . ."
-        run: |
-          echo $PKG_CONFIG_PATH
-          pip3 install . -v
-      - name: "python -m pytest -vv tests/test_*.py . . ."
-        run: |
-          python -m pytest -vv tests/test_*.py
-      - name: "Run doc tests . . ."
-        run: |
-          etc/make-doc.sh  # so that all files are generated!
-          cd docs
-          python -m sphinx -b doctest -d _build/doctrees source _build/doctest
-      - name: "Running ruff, pylint and cpplint . . ."
-        run: make lint
-  macosx:
-    strategy:
-      fail-fast: false
-      matrix:
-        python_version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
-    runs-on: macOS-latest
-    timeout-minutes: 15
-    env:
-      CXX: "ccache clang++"
+      CXX: "ccache ${{ matrix.compiler }}"
       CXXFLAGS: "-O2 -g"
     steps:
       - uses: actions/checkout@v4
@@ -88,7 +40,8 @@ jobs:
           echo "PKG_CONFIG_PATH=$MAMBA_ROOT_PREFIX/envs/libsemigroups/lib/pkgconfig:$MAMBA_ROOT_PREFIX/envs/libsemigroups/share/pkgconfig:/usr/local/lib/pkgconfig" >> $GITHUB_ENV
           echo "LD_LIBRARY_PATH=$MAMBA_ROOT_PREFIX/envs/libsemigroups/lib:/usr/local/lib" >> $GITHUB_ENV
           echo "PATH=$MAMBA_ROOT_PREFIX/envs/libsemigroups/bin:$PATH" >> $GITHUB_ENV
-      - name: "Install libsemigroups dependencies . . ."
+      - name: "macOS only: Install libsemigroups dependencies . . ."
+        if: ${{ matrix.os == 'macOS-latest' }}
         run: brew install autoconf automake libtool
       - name: "Setup ccache . . ."
         uses: Chocobo1/setup-ccache-action@v1
@@ -99,9 +52,7 @@ jobs:
         run: |
           git clone --depth 1 --branch main https://github.com/libsemigroups/libsemigroups.git
           cd libsemigroups
-          ./autogen.sh 
-          ./configure CXX="$CXX" CXXFLAGS="$CXXFLAGS" --disable-hpcombi --with-external-fmt
-          sudo make install -j8
+          ./autogen.sh && ./configure CXX="$CXX" CXXFLAGS="$CXXFLAGS" --disable-hpcombi --with-external-fmt && sudo make install -j8
           ccache -s
       - name: "Python version . . ."
         run: |