Integrate lint and format

.github/workflows/integrate.yaml

@@ -7,6 +7,7 @@ on:
       - "agora.cabal"
     branches:
       - master
+      - staging
   pull_request:
     paths:
       - "**.hs"
@@ -14,6 +15,42 @@ on:
       - "flake.lock"
       - "agora.cabal"
 jobs:
+  check-formatting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/cache@v2.1.4
+        name: Cache Stack
+        with:
+          path: ~/.stack
+          key: ${{ runner.os }}-stack-formatting
+          restore-keys: ${{ runner.os }}-stack-
+
+      - run: stack install fourmolu
+        name: Setup
+
+      - run: ./.github/format.sh
+        name: "Run fourmolu"
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/cache@v2.1.4
+        name: Cache Stack
+        with:
+          path: ~/.stack
+          key: ${{ runner.os }}-stack-lint
+          restore-keys: ${{ runner.os }}-stack-
+
+      - run: stack install hlint
+        name: Setup
+
+      - run: ~/.local/bin/hlint $(git ls-tree -r HEAD --full-tree --name-only | grep -E '.*\.hs')
+        name: Lint
+
   build:
     runs-on: ubuntu-latest
     steps: