ci: caching and cleanup

Author: rasheedja

.github/workflows/haskell.yml

@@ -50,18 +50,34 @@ jobs:
 
       - name: Configure the build
         run: |
-          cabal update
           cabal configure --enable-tests --enable-benchmarks --disable-documentation
           cabal build --dry-run
 
+      - name: Restore cached dependencies
+        uses: actions/cache/restore@v4
+        id: cache
+        env:
+          key: ${{ runner.os }}-ghc-${{ steps.setup.outputs.ghc-version }}-cabal-${{ steps.setup.outputs.cabal-version }}
+        with:
+          path: ${{ steps.setup.outputs.cabal-store }}
+          key: ${{ env.key }}-plan-${{ hashFiles('**/plan.json') }}
+          restore-keys: ${{ env.key }}-
+
       - name: Build dependencies
         run: cabal build --only-dependencies
 
+      - name: Save cached dependencies
+        uses: actions/cache/save@v4
+        if: steps.cache.outputs.cache-hit != 'true'
+        with:
+          path: ${{ steps.setup.outputs.cabal-store }}
+          key: ${{ steps.cache.outputs.cache-primary-key }}
+
       - name: Build the package
-        run: cabal build
+        run: cabal build all
 
       - name: Run tests
-        run: cabal test
+        run: cabal test all
 
       - name: Build documentation
-        run: cabal haddock
+        run: cabal haddock all