Lets try out GitHub workflows

Author: webdevred

.github/workflows/haskell.yml

@@ -0,0 +1,41 @@
+name: Haskell Stack CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Install hlint
+      run: sudo apt install -y hlint
+
+    - name: Run hlint
+      run: hlint .
+
+    - name: Run fourmolu
+      uses: haskell-actions/run-fourmolu@v11
+
+    - name: Cache Stack and binaries
+      uses: actions/cache@v3
+      with:
+        path: |
+          ~/.stack
+          .stack-work
+        key: ${{ runner.os }}-stack-${{ hashFiles('**/stack.yaml.lock') }}
+
+    - name: Set up GHC with Stack
+      run: stack setup
+
+    - name: Build project
+      run: stack build --fast
+
+    - name: Run tests
+      run: stack test --fast