Cabal GitHub action for GHC 9.0, 9.2, 9.4 (#448)

Author: peterbecich

.github/workflows/cabal.yml

@@ -0,0 +1,35 @@
+name: Cabal
+
+on: ['pull_request', 'push']
+
+jobs:
+  build:
+    name: Build on ${{ matrix.os }} GHC ${{ matrix.ghc }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest]
+        ghc: ["9.0.2", "9.2.7", "9.4.4"]
+      fail-fast: false
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - uses: haskell/actions/setup@v2
+      name: Setup Haskell Cabal
+      with:
+        ghc-version: ${{ matrix.ghc }}
+
+    - uses: actions/cache@v2
+      name: Cache ~/.cabal
+      with:
+        path: ~/.cabal
+        key: "${{ runner.os }}-${{ matrix.ghc }}-v9-${{ hashFiles('stylish-haskell.cabal') }}"
+
+    - name: Build
+      run: cabal build --enable-tests
+      id: build
+
+    - name: Test
+      run: cabal test
+

README.markdown

@@ -2,7 +2,8 @@
 
 <img src="./assets/Logo/SVG/RoundedLogo.svg" width="100px">
 
-![Build Status](https://github.com/jaspervdj/stylish-haskell/workflows/CI/badge.svg)
+![Stack Build Status](https://github.com/jaspervdj/stylish-haskell/workflows/CI/badge.svg)
+![Cabal Build Status](https://github.com/jaspervdj/stylish-haskell/workflows/Cabal/badge.svg)
 
 ## Introduction