Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC

Commits:

• fa88d09a
  by Wolfgang Jeltsch at 2026-02-24T08:36:47-05:00

  Refine the imports of `System.IO.OS`
  
  Commit 68bd08055594b8cbf6148a72d108786deb6c12a1 replaced the
  `GHC.Internal.Data.Bool` import by a `GHC.Internal.Base` import.
  However, while the `GHC.Internal.Data.Bool` import was conditional and
  partial, the `GHC.Internal.Base` import is unconditional and total. As a
  result, the import list is not tuned to import only the necessary bits
  anymore, and furthermore GHC emits a lot of warnings about redundant
  imports.
  
  This commit makes the `GHC.Internal.Base` import conditional and partial
  in the same way that the `GHC.Internal.Data.Bool` import was.
  

1 changed file:

• libraries/ghc-internal/src/GHC/Internal/System/IO/OS.hs

Changes:

 )

 where

-import GHC.Internal.Base

+#if defined(mingw32_HOST_OS)

+import GHC.Internal.Base (otherwise)

+#endif

 import GHC.Internal.Control.Monad (return)

 import GHC.Internal.Control.Concurrent.MVar (MVar)

 import GHC.Internal.Control.Exception (mask)