Hix.Managed.Cabal.Resources

Documentation

packageDbs :: PackageDBStack

resources :: Packages ManagedPackage -> SolveConfig -> M SolveResources

This adds the ManagedPackages to the source package DB, which is the set of available package IDs. This means that the solver will find our local packages (for targets that depend on packages in other envs) like it finds Hackage packages, and therefore local deps will be included in the plan.

Because we don't want local packages in the plan (as they are not mutable, but static in the Nix build), it would be tempting to add ManagedPackages to the installed package index instead, which would exclude them from the plan's overrides. However, their metadata must include concrete unit IDs for their dependencies with fixed versions, which would require us to choose versions for them and might interfere with solving.

Maybe the basic installed package index could be queried to determine the dep versions. Not sure this would be better than just filtering the plan.

acquire :: Packages ManagedPackage -> CabalConfig -> GhcDb -> M SolveResources