Added stylish-haskell to github-actions

Author: coot

.github/workflows/haskell.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Set cache version
       run: echo "CACHE_VERSION=pu4Aevoo" >> $GITHUB_ENV
 
-    - name: "Setup haskell"
+    - name: "Setup Haskell"
       uses: haskell/actions/setup@v1
       id: setup-haskell
       with:
@@ -38,7 +38,7 @@ jobs:
         echo "::set-output name=weeknum::$(/bin/date -u "+%W")"
 
     - uses: actions/cache@v3
-      name: "Cache `cabal store`"
+      name: "Cache cabal store"
       with:
         path: ${{ runner.os == 'Windows' && steps.win-setup-haskell.outputs.cabal-store || steps.setup-haskell.outputs.cabal-store }}
         key: cache-dependencies-${{ env.CACHE_VERSION }}-${{ runner.os }}-${{ matrix.ghc }}-${{ hashFiles('dependencies.txt') }}
@@ -65,3 +65,62 @@ jobs:
     - name: io-sim [test]
       run: cabal run io-sim:test
 
+  stylish-haskell:
+    runs-on: ubuntu-22.04
+
+    steps:
+    - name: Set cache version
+      run: |
+        echo "CACHE_VERSION=hi5eTh3A" >> $GITHUB_ENV
+        echo "STYLISH_HASKELL_VERSION=0.13.0.0" >> $GITHUB_ENV
+
+    - name: "Install build environment (apt-get)"
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install fd-find
+
+    - name: "Setup Haskell"
+      uses: haskell/actions/setup@v1
+      id: setup-haskell
+      with:
+        ghc-version: 8.10.7
+        cabal-version: 3.6.2.0
+
+    - name: "Setup cabal bin path"
+      run: |
+        echo "$HOME/.cabal/bin" >> $GITHUB_PATH
+
+    - uses: actions/cache@v3
+      name: "Cache cabal store"
+      with:
+        path: ${{ steps.setup-haskell.outputs.cabal-store }}
+        key: cache-dependencies-${{ env.CACHE_VERSION }}
+
+    - uses: actions/cache@v3
+      name: "Cache `stylish-haskell`"
+      with:
+        path: ~/.cabal/bin/stylish-haskell
+        key: cabal-path-${{ env.STYLISH_HASKELL_VERSION }}
+
+    # Install stylish-haskell unless the right version is already available
+    # from the cache
+    - name: "Install `stylish-haskell`"
+      run: |
+        if [[ -x $(which stylish-haskell) && $(stylish-haskell --version) == "stylish-haskell ${{ env.STYLISH_HASKELL_VERSION }}" ]];
+        then
+          echo "Using cached `stylish-haskell`"
+        else
+          cabal install stylish-haskell-${{ env.STYLISH_HASKELL_VERSION }}
+        fi
+
+    - name: "`stylish-haskell` version"
+      run: |
+        which stylish-haskell
+        stylish-haskell --version
+
+    - uses: actions/checkout@v2
+
+    - name: "Run `stylish-haskell`"
+      run: |
+        ./scripts/check-stylish.sh
+        git diff --exit-code

scripts/check-stylish.sh

@@ -3,6 +3,8 @@
 set -euo pipefail
 export LC_ALL=C.UTF-8
 
-fd . './io-sim' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
-fd . './io-classes' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
-fd . './strict-stm' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
+[[ -x '/usr/bin/fd' ]] && FD="fd" ||  FD="fdfind"
+
+$FD . './io-sim' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
+$FD . './io-classes' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i
+$FD . './strict-stm' -e hs -E Setup.hs -X stylish-haskell -c .stylish-haskell.yaml -i