[WIP] fix CI

.github/workflows/ci.yml

@@ -14,101 +14,23 @@ on:
     - cron: '0 0 1 * *'
 
 jobs:
-  # Check that the build passes with stack on all the provided snapshots, and
-  # thus all the supported ghc versions.
-  stack:
-    name: ${{ matrix.stack_yaml }}
+  build:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        stack_yaml:
-          - stack-8.6.5.yaml
-          - stack-8.8.4.yaml
-          - stack-8.10.7.yaml
-          - stack-9.0.2.yaml
-          - stack-9.2.7.yaml
-          - stack-9.4.5.yaml
-          - stack-9.6.1.yaml
-        os:
-          - ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-
-    - uses: actions/cache@v2
-      name: Cache Stack Artifacts
-      with:
-        path: |
-          ~/.stack
-          .stack-work
-        key: ${{ runner.os }}-stack-${{ hashFiles(matrix.stack_yaml) }}
-
-    - uses: haskell-actions/setup@v2
-      id: setup-haskell-stack
-      name: Setup Stack
-      with:
-        enable-stack: true
-        stack-setup-ghc: true
-        stack-no-global: true
-
-    - name: Build
-      run: |
-        stack --stack-yaml=${{ matrix.stack_yaml }} install --test --bench --no-run-tests --no-run-benchmarks
-
-    - name: Test
-      run: |
-        stack --stack-yaml=${{ matrix.stack_yaml }} test
-
-    - name: Double-check the example file
-      run: |
-        stack --stack-yaml=${{ matrix.stack_yaml }} exec -- runghc examples/example.hs | diff examples/expected.txt -
-
-  # Check that the build passes with cabal with the latest version of our
-  # dependencies.
-  cabal:
-    name: newest
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        include:
-          - ghc-version: '9.8.1'
-            os: ubuntu-latest
-
+        ghc: ['8.6.5', '8.8.4']
+        cabal: ['2.4.1.0', '3.0.0.0']
+        os: [ubuntu-latest, macOS-latest, windows-latest]
+        exclude:
+          # GHC 8.8+ only works with cabal v3+
+          - ghc: 8.8.4
+            cabal: 2.4.1.0
+    name: Haskell GHC ${{ matrix.ghc }} sample
     steps:
-    - uses: actions/checkout@v2
-
-    - uses: haskell-actions/setup@v2
-      id: setup-haskell-cabal
-      name: Setup Cabal
-      with:
-        ghc-version: ${{ matrix.ghc }}
-        cabal-version: ${{ matrix.cabal }}
-
-    # This freeze file is regenerated on every build, so we will always test
-    # with the most recent version of our dependencies allowed by our upper
-    # bounds.
-    - name: Freeze
-      run: |
-        cabal v2-configure --enable-tests --enable-benchmarks --test-show-details=direct
-        cabal freeze
-
-    # Only reuse the cached copy of our dependencies if our freeze file matches
-    # the cache's copy.
-    - uses: actions/cache@v2
-      name: Cache Cabal Artifacts
-      with:
-        path: |
-          ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
-        key: ${{ runner.os }}-cabal-v2-${{ hashFiles('cabal.project.freeze') }}
-
-    - name: Build
-      run: |
-        cabal v2-build --enable-tests
-
-    - name: Test
-      run: |
-        cabal v2-test
-
-    - name: Double-check the example file
-      run: |
-        cabal v2-exec -- runghc examples/example.hs | diff examples/expected.txt -
+      - uses: actions/checkout@v3
+      - name: Setup Haskell
+        uses: haskell/actions/setup@v2
+        with:
+          ghc-version: ${{ matrix.ghc }}
+          cabal-version: ${{ matrix.cabal }}
+      - run: runhaskell Hello.hs

Hello.hs

@@ -0,0 +1,2 @@
+main :: IO ()
+main = putStrLn "hello!"