bump-cabal-index-state

To update the Cabal index-state, the skill automates extraction of the latest timestamp from cabal update output and applies it directly to cabal.project files, eliminating manual edits and preventing build drift.

Haskell builds fail with outdated index-state values due to dependency resolution drift. Refreshing the index-state ensures reliable builds by syncing your project with the most recent package availability.

Yes, you can bump index-state in nix-based Haskell projects. The process updates relevant nix-related configuration files alongside cabal.project and verifies compatibility using nix-fast-build.

The best way to automate Cabal project configuration updates is to extract the new index-state from cabal update, apply it to configuration files, create a dedicated branch, and verify the change with a build.

To verify a Cabal index-state change doesn't break your build, perform a subsequent build using nix-fast-build or cabal build. This validation step ensures compatibility after updating the configuration.