avoid cache invalidation

Author: MaximilianAlgehed

.github/workflows/haskell-ci.yml

@@ -45,7 +45,7 @@ jobs:
       - run: cabal test all --ghc-options=-fhpc
       - run: ./scripts/generate-coverage-comment.sh constrained.tix > coverage-report.md
       - run: cat coverage-report.md
-      - run: cabal haddock all
+      - run: cabal haddock all --ghc-options=-fhpc
       - name: Upload coverage report
         uses: actions/upload-artifact@v4
         with: