Github workflow

.github/workflows/tests.yml

@@ -0,0 +1,33 @@
+name: Tests
+
+on:
+    pull_request:
+    push:
+        branches:
+        - master
+
+jobs:
+  build:
+    name: CI
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        resolver:
+        #- nightly
+        - lts-18
+        - lts-16
+        - lts-14
+
+    steps:
+      - name: Clone project
+        uses: actions/checkout@v2
+
+      - name: Build and run tests
+        shell: bash
+        run: |
+            set -ex
+            stack upgrade
+            stack --version
+            stack test --fast --no-terminal --resolver=${{ matrix.resolver }}

stack.yaml

@@ -1,4 +1,4 @@
-resolver: lts-17.9
+resolver: lts-18.28
 packages:
 - .
 extra-deps: []