ci: add cabal-install workflow

Author: andreabedini

.github/workflows/ci-cabal-install.yml

@@ -0,0 +1,102 @@
+name: CI
+
+# Trigger the workflow on push or pull request, but only for the master branch
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+  push:
+    branches: [master]
+
+jobs:
+  cabal:
+    name: ${{ matrix.os }} / ghc ${{ matrix.ghc }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        ghc: ['9.8.4'] # bootstrapping compiler
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: "recursive"
+
+    - uses: haskell/ghcup-setup@v1
+
+    - id: ghcup
+      run: |
+        ghcup config set cache true
+        echo "basedir=$(ghcup whereis basedir)" >> $GITHUB_OUTPUT
+
+    - id: ghcup-cache
+      name: Cache GHCup basedir
+      uses: actions/cache@v4
+      with:
+        key: ghcup-basedir-${{ github.run_id }}
+        restore-keys: ghcup-basedir-
+        path: ${{ steps.ghcup.outputs.basedir }}
+
+    - run: |
+        ghcup install ghc --set ${{ matrix.ghc }}
+        ghcup install cabal --set
+
+    - id: cabal-paths
+      run: |
+        cabal user-config init
+        echo "store=$(cabal path --store-dir)" >> $GITHUB_OUTPUT
+        echo "remote-repo-cache=$(cabal path --remote-repo-cache)" >> $GITHUB_OUTPUT
+
+    - name: Restore Hackage index
+      uses: actions/cache/restore@v4
+      with:
+        key: hackage-${{ github.run_id }}
+        restore-keys: hackage-
+        path: ${{ steps.cabal-paths.outputs.remote-repo-cache }}
+        
+    - run: cabal update
+
+    - name: Restore build artifacts
+      uses: actions/cache/restore@v4
+      with:
+        key: ${{ matrix.os }}-${{ matrix.ghc }}-${{ github.run_id }}
+        restore-keys: ${{ matrix.os }}-${{ matrix.ghc }}-
+        path: |
+          ${{ steps.cabal-paths.outputs.store }}
+          libraries/Cabal/dist-newstyle
+          _build
+
+    - name: Build stage1
+      run: make stage1
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: stage1
+        path: _stage1
+
+    - name: Save GHCup cache
+      uses: actions/cache/save@v4
+      if: always()
+      with:
+        key: ghcup-${{ github.run_id }}
+        path: ${{ steps.ghcup.outputs.cachedir }}
+
+    - name: Save Hackage index
+      uses: actions/cache/save@v4
+      if: always()
+      with:
+        key: hackage-${{ github.run_id }}
+        path: ${{ steps.cabal-paths.outputs.remote-repo-cache }}
+
+    - name: Save build artifacts
+      if: always()
+      uses: actions/cache/save@v4
+      with:
+        key: ${{ matrix.os }}-${{ matrix.ghc }}-${{ github.run_id }}
+        path: |
+          ${{ steps.cabal-paths.outputs.store }}
+          libraries/Cabal/dist-newstyle
+          _build