github actions: download stylish-haskell

Author: coot

.github/workflows/haskell.yml

@@ -122,6 +122,9 @@ jobs:
   stylish-haskell:
     runs-on: ubuntu-22.04
 
+    env:
+      STYLISH_HASKELL_VERSION: "0.14.4.0"
+
     steps:
     - name: Set cache version
       run: |
@@ -156,16 +159,15 @@ jobs:
         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`"
+    - name: Download stylish-haskell
       run: |
-        if [[ -x $(which stylish-haskell) && $(stylish-haskell --version) == "stylish-haskell ${{ env.STYLISH_HASKELL_VERSION }}" ]];
-        then
-          echo "Using cached `stylish-haskell`"
-        else
-          cabal install --overwrite-policy=always stylish-haskell-${{ env.STYLISH_HASKELL_VERSION }}
-        fi
+        version="${{ env.STYLISH_HASKELL_VERSION }}"
+
+        curl -sL \
+          "https://github.com/haskell/stylish-haskell/releases/download/v$version/stylish-haskell-v$version-linux-x86_64.tar.gz" \
+          | tar -C "/tmp" -xz
+
+        echo "PATH=/tmp/stylish-haskell-v$version-linux-x86_64:$PATH" >> $GITHUB_ENV
 
     - name: "`stylish-haskell` version"
       run: |