[DO NOT MERGE] Trace mod flags
This PR is only to get a GHC-head with tracing on the module flags on Windows built by CI. For more context on why, see this https://github.com/haskell/cabal/pull/9177#issuecomment-2166705472
This PR is only to get a GHC-head with tracing on the module flags on Windows built by CI. For more context on why, see this https://github.com/haskell/cabal/pull/9177#issuecomment-2166705472