Wolfgang Jeltsch authored Feb 19, 2026 and Marge Bot committed Mar 09, 2026

This contribution eliminates all dependencies on
`GHC.Internal.System.IO` from within `ghc-internal`. It comprises the
following changes:

  * Make `GHC.Internal.Fingerprint` independent of I/O support
  * Tighten the dependencies of `GHC.Internal.Data.Version`
  * Tighten the dependencies of `GHC.Internal.TH.Monad`
  * Tighten the dependencies of `GHCi.Helpers`
  * Move some code that needs `System.IO` to `template-haskell`
  * Move the `GHC.ResponseFile` implementation into `base`
  * Move the `System.Exit` implementation into `base`
  * Move the `System.IO.OS` implementation into `base`

Metric Decrease:
    size_hello_artifact
    size_hello_artifact_gzip
    size_hello_unicode
    size_hello_unicode_gzip