Extra constraints for head.hackage job

[andreasabel]

Recently, most of my GHC 9.6.1 alpha3 head.hackage jobs fail because an old base-compat (0.10.5) is picked up, ruining the build plan. E.g.:

• https://github.com/fugue/goldplate/actions/runs/4275433235/jobs/7442776866#step:17:77

One can fix this by patching the generated workflow with an extra constraints: base-compat >= 0.12.2. E.g.:

• haskell-hvr/HsYAML-aeson@ab5d389

Is there a way to place extra constraints for the head.hackage job in the cabal.haskell-ci file?
Or (how) could this be supported?

[RyanGlScott]

I think raw-project is what you are looking for. Adding something like this to your cabal.haskell-ci file should suffice:

raw-project
  constraints:
    base-compat >= 0.12.2