CI with nix

.github/workflows/.ci.yaml

@@ -0,0 +1,14 @@
+name: "CI"
+on:
+  pull_request:
+  push:
+jobs:
+  CI:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: DeterminateSystems/magic-nix-cache-action@main
+      - run: nix build
+      - run: nix flake check
+      - run: nix develop --command bash -c "cabal update; cabal test"

.github/workflows/.haskell.disabled

@@ -1,43 +0,0 @@
-name: Haskell CI
-
-on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v4
-    - uses: actions/setup-haskell@v1
-      with:
-        ghc-version: '9.4.7'
-        cabal-version: '3.6'
-
-    - name: Cache
-      uses: actions/cache@v3
-      env:
-        cache-name: cache-cabal
-      with:
-        path: ~/.cabal
-        key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/cabal.project') }}
-        restore-keys: |
-          ${{ runner.os }}-build-${{ env.cache-name }}-
-          ${{ runner.os }}-build-
-          ${{ runner.os }}-
-
-    - name: Install dependencies
-      run: |
-        cabal update
-        cabal build --only-dependencies --enable-tests --enable-benchmarks
-    - name: Build
-      run: cabal build --enable-tests --enable-benchmarks all
-    - name: Run tests
-      run: cabal test all

flake.nix

@@ -37,12 +37,13 @@
           };
         };
       in
-      {
+      rec {
         packages.default = self.packages.${system}.${packageName};
         packages.${packageName} =
           haskellPackages.callCabal2nix packageName self { };
 
         checks = {
+          hyperbole-check = packages.${packageName};
           pre-commit-check = pre-commit-hooks.lib.${system}.run {
             src = ./.;
             hooks = {