Configurations proposal

Duncan Coutts duncan.coutts at
Thu Oct 26 13:38:40 EDT 2006

On Thu, 2006-10-26 at 17:03 +0100, Neil Mitchell wrote:
> Hi
> > * Your example used [ os(windows) ]. However, the value for
> Woohoo! Well done, karma++ - for being factually correct.
> > I agree--I wish System.Info.os worked differently, actually. But, there are
> > apparently some people (not me) that use Haskell on Cygwin, and they need to
> > be able to detect it, because e.g. Posix and Readline are available on
> > Cygwin but not Mingw. Maybe os(x) should be either "mingw" or "cygwin"?
> WRONG! Plain on old flat WRONG! If you run WinHugs on Windows having
> built WinHugs with Visual Studio, never even showing anything in the
> build process either mingw or cygwin, then mingw is the
> System.Info.os, which is, without a doubt, WRONG!
> Perhaps this is the time for the Cabal people to push for a
> flag, which is True on Windows and False if not?
> If you depend on an entirely wrong configuration variable, then that
> makes your configuration entirely wrong. For information, Yhc returns
> "Windows" if your OS is Windows - rather than returning the day of the
> week plus the birthday of your best friend (which makes similar sense
> to returning the installation status of an non-os component!).

I agree.

I think they should be using some other method to find cygwin
components. Eg they can check if the posix package is available or


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