Simplify CI

.github/workflows/ci.yaml

@@ -0,0 +1,31 @@
+name: Haskell CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ghc: ['8.0', '8.2', '8.4', '8.6', '8.8', '8.10', '9.0', '9.2', '9.4', '9.6', '9.8', '9.10', '9.12']
+    steps:
+      - uses: actions/checkout@v4
+      - uses: haskell-actions/setup@v2
+        id: setup-haskell
+        with:
+          ghc-version: ${{ matrix.ghc }}
+      - uses: actions/cache@v4
+        with:
+          path: |
+            ${{ steps.setup-haskell.outputs.cabal-store }}
+            dist-newstyle
+          key: ${{ runner.os }}-${{ matrix.ghc }}
+      - name: Build
+        run: cabal build

parallel.cabal

@@ -12,10 +12,10 @@ category:       Control, Parallelism
 build-type:     Simple
 
 tested-with:
-  GHC == 9.12.1
+  GHC == 9.12.2
   GHC == 9.10.1
   GHC == 9.8.4
-  GHC == 9.6.6
+  GHC == 9.6.7
   GHC == 9.4.8
   GHC == 9.2.8
   GHC == 9.0.2
@@ -25,13 +25,6 @@ tested-with:
   GHC == 8.4.4
   GHC == 8.2.2
   GHC == 8.0.2
-  -- Drop these old GHCs from CI:
-  -- GHC == 7.10.3
-  -- GHC == 7.8.4
-  -- GHC == 7.6.3
-  -- GHC == 7.4.2
-  -- GHC == 7.2.2
-  -- GHC == 7.0.4
 
 description:
     This package provides a library for parallel programming.