Skip if installed

Author: andrjohns

.github/workflows/main.yml

@@ -77,68 +77,3 @@ jobs:
       with:
         name: gtest_outputs_xml
         path: '**/*_test.xml'
-
-  mix-fun:
-    name: mix fun and prob tests ${{ matrix.group }} (${{ matrix.os }})
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [windows-11-arm, windows-latest, ubuntu-24.04-arm]
-        group: [1, 2, 3, 4, 5]
-
-    steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-python@v5
-      with:
-        python-version: '3.x'
-
-    - name: Download Rtools45
-      if: runner.os == 'Windows'
-      run: |
-        $ARCH = if ('${{ matrix.os }}' -eq 'windows-11-arm') { 'aarch64' } else { 'x86_64' }
-        $RTOOLS = if ('${{ matrix.os }}' -eq 'windows-11-arm') { "rtools45-$ARCH" } else { 'rtools45' }
-        echo "ARCH=$ARCH" | Out-File -Append -FilePath $env:GITHUB_ENV -Encoding utf8
-        echo "RTOOLS=$RTOOLS" | Out-File -Append -FilePath $env:GITHUB_ENV -Encoding utf8
-        Invoke-WebRequest `
-            -Uri https://github.com/r-hub/rtools45/releases/download/latest/$RTOOLS.exe `
-            -Headers @{ 'Authorization' = "Bearer ${{ secrets.GITHUB_TOKEN }}" } `
-            -OutFile "$RTOOLS.exe"
-
-    - name: Install Rtools45
-      if: runner.os == 'Windows'
-      run: |
-        Start-Process -FilePath "$env:RTOOLS.exe" -ArgumentList "/install /norestart /verysilent /SUPPRESSMSGBOXES" -NoNewWindow -Wait
-        echo "C:/$env:RTOOLS/usr/bin;C:/$RTOOLS/$env:ARCH-w64-mingw32.static.posix/bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        echo "$(pwd)/lib/tbb" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-
-    - name: Build Math libs
-      shell: pwsh
-      run: |
-        Add-Content make\local "CPPFLAGS=-w -Wno-psabi -Wno-misleading-indentation`n"
-        Add-Content make\local "STAN_THREADS=true`n"
-        make -f make/standalone math-libs -j2
-
-    - name: Run mix/fun unit tests
-      shell: pwsh
-      run: |
-        $MixFunProbTests = Get-ChildItem -Path test\unit\math\mix\fun\*, test\unit\math\mix\prob\* -Include *.cpp | Resolve-Path -Relative
-        $NumberTests = $MixFunProbTests.Length
-        $FifthNumberTests = [math]::Floor($NumberTests / 5)
-
-        $MixFunProbTestsArray = @( `
-          $MixFunProbTests[0..($FifthNumberTests - 1)], `
-          $MixFunProbTests[$FifthNumberTests..(2 * $FifthNumberTests - 1)], `
-          $MixFunProbTests[(2 * $FifthNumberTests)..(3 * $FifthNumberTests - 1)], `
-          $MixFunProbTests[(3 * $FifthNumberTests)..(4 * $FifthNumberTests - 1)], `
-          $MixFunProbTests[(4 * $FifthNumberTests)..($NumberTests - 1)] `
-        )
-
-        python runTests.py -j2 $MixFunProbTestsArray[(${{ matrix.group }} - 1)]
-
-    - name: Upload gtest_output xml
-      uses: actions/upload-artifact@v4
-      if: failure()
-      with:
-        name: gtest_outputs_xml
-        path: '**/*_test.xml'