Add a workflow

.gitea/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build
+
+on: [push]
+jobs:
+  audit:
+    runs-on: alpine
+    steps:
+      - name: Set up environment
+        shell: ash {0}
+        run: |
+          apk add --no-cache git bash curl build-base readline-dev openssl-dev zlib-dev libpq-dev gmp-dev
+          echo "$HOME/.ghcup/bin" >> $GITHUB_PATH
+          echo "$HOME/.cabal/bin" >> $GITHUB_PATH
+      - name: Prepare system
+        run: |
+          curl --create-dirs --output-dir \
+            ~/.ghcup/bin https://downloads.haskell.org/~ghcup/0.1.19.5/x86_64-linux-ghcup-0.1.19.5 -o ghcup
+          chmod +x ~/.ghcup/bin/ghcup
+          ghcup install ghc 9.4.8
+          ghcup install cabal 3.6.2.0
+          ghcup set ghc 9.4.8
+      - uses: actions/checkout@v4
+      - name: Install dependencies
+        run: |
+          cabal update
+          cabal install hlint --constraint="hlint ==3.6.1"
+      - run: cabal exec hlint -- src tests