Github Actions

.github/workflows/haskell.yml

@@ -0,0 +1,19 @@
+name: Haskell CI
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/cache@v1
+        name: Cache ~/.stack
+        with:
+          path: ~/.stack
+          key: ${{ runner.os }}-${{ matrix.ghc }}-stack
+      - name: Build
+        run: stack build --fast
+      - name: Run tests
+        run: stack test --fast