Module System.Posix.Directory of the unix package defines

  getWorkingDirectory :: IO FilePath
  changeWorkingDirectory :: FilePath -> IO ()

I believe the functionality is quite portable and not limited to unix-like
systems. I know that e.g. Windows has chdir and getcwd. Module Filesystem of
the system-fileio package has

  getWorkingDirectory :: IO FilePath
  setWorkingDirectory :: FilePath -> IO ()

I propose to add these functions to System.Environmant or maybe
System.Directory.

Rationale:

(1) This is standard functionality that should at least be in the Haskell
Platform, if not in the standard libraries.

(2) I would like to avoid depending on an extra package just to have these
two very basic functions available in a OS independent way.

(3) "system-fileio".Filesystem does not seem to be the right place for this.

The last point may be arguable, but the first two are plain common sense
IMO.

Cheers
Ben
--
"Make it so they have to reboot after every typo." ? Scott Adams


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