Merge pull request phuhl#232 from d3adb5/ci/use-latest-stack

ci: use latest stack, resolver ghc, and cache deps

.github/workflows/main.yml

@@ -1,45 +1,48 @@
 name: CI
 
-# Trigger the workflow on push or pull request, but only for the main branch
 on:
   pull_request:
   push:
-    branches: [main]
+    branches: [master]
 
 jobs:
-  stack:
-    name: stack / ghc ${{ matrix.ghc }}
+  build:
+    name: Build
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        stack: ["2.7.3"]
-        ghc: ["8.10.7"]
 
     steps:
-      - uses: actions/checkout@v2
-        if: github.event.action == 'opened' || github.event.action == 'synchronize' || github.event.ref == 'refs/heads/main'
+      - uses: actions/checkout@v3
 
-      - uses: haskell/actions/setup@v1
-        name: Setup Haskell Stack
-        with:
-          ghc-version: ${{ matrix.ghc }}
-          stack-version: ${{ matrix.stack }}
-          enable-stack: true
-      - uses: actions/[email protected]
+      - uses: actions/cache@v3
         name: Cache ~/.stack
         with:
           path: ~/.stack
-          key: ${{ runner.os }}-${{ matrix.ghc }}-stack
+          key: stack-global-${{ hashFiles('stack.yaml') }}
+          restore-keys: stack-global-
+
+      - uses: actions/cache@v3
+        name: Cache .stack-work
+        with:
+          path: .stack-work
+          key: stack-work-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}-${{ hashFiles('**/*.hs') }}
+          restore-keys: stack-work-
+
+      - uses: haskell/actions/setup@v2
+        name: Setup Haskell Stack
+        with:
+          stack-version: latest
+          stack-no-global: true
+          stack-setup-ghc: true
+          enable-stack: true
 
       - name: Install non-hs dependencies
         run: sudo apt-get update && sudo apt-get install libgtk-3-dev gobject-introspection libgirepository1.0-dev libwebkit2gtk-4.0-dev libgtksourceview-3.0-dev
 
       - name: Install dependencies
-        run: |
-          stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks --only-dependencies
+        run: stack build --only-dependencies
+
       - name: Build
-        run: |
-          stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks
+        run: stack build
+
       - name: Test
-        run: |
-          stack test --system-ghc
+        run: stack test