problem with unix package

[Frederik Eaton]

Hello Stefan,

Thanks for your reply. Now I have found a repository here, is this the
right one?

http://darcs.haskell.org/packages/unix/

However, it doesn't build for me:

$ darcs get --partial http://darcs.haskell.org/packages/unix/
...
$ cas configure --user --prefix=$HOME && cas build && cas install --user

Setup.hs:17:30:
    Couldn't match expected type `UserHooks'
           against inferred type `Maybe UserHooks'
      Expected type: Hook a
      Inferred type: PackageDescription
                     -> LocalBuildInfo
                     -> Maybe UserHooks
                     -> BuildFlags
                     -> IO ()
    In the second argument of `($)', namely
        `buildHook defaultUserHooks'
    In the `buildHook' field of a record
$ ghc --version                                                         
The Glorious Glasgow Haskell Compilation System, version 6.6

Is this a cabal version problem? Yet it seems odd that unix-2.0
builds, but unix HEAD which also has version 2.0 doesn't build...

I have a project which depends on 'unix' which I would like to use, so
if you can point me to a working version or tell me what to fix then
it would be helpful.

Thanks,

Frederik

On Thu, Apr 19, 2007 at 06:53:20AM -0700, Stefan O'Rear wrote:
> On Thu, Apr 19, 2007 at 12:27:01PM +0100, Frederik Eaton wrote:
> > Hello,
> > 
> > I am having trouble loading the unix package. I am not sure what I am
> > doing wrong. I have just installed it from hackage. As you can see
> > below, the error message complains about an unknown symbol 'lstat',
> > which is not in libc.
> > 
> > [1]$ ghci -package unix                  
> >    ___         ___ _
> >   / _ \ /\  /\/ __(_)
> >  / /_\// /_/ / /  | |      GHC Interactive, version 6.6, for Haskell 98.
> > / /_\\/ __  / /___| |      http://www.haskell.org/ghc/
> > \____/\/ /_/\____/|_|      Type :? for help.
> > 
> > Loading package base ... linking ... done.
> > ghc-6.6: /home/frederik/lib/unix-2.0/ghc-6.6/HSunix-2.0.o: unknown symbol `lstat'
> > Loading package unix-2.0 ... linking ... ghc-6.6: unable to load package `unix-2.0'
> > [1]$ nm -D /lib/libc-2.5.so | grep -w lstat   
> > [1]$ 
> > 
> > This is an unstable Debian installation.
> > 
> > When I try the same on a system with ghc 6.4.2 and unix-1.0, there is
> > no problem. That system has libc 2.3.6, which also lacks an 'lstat'
> > symbol.
> > 
> > Thank you for your help.
> 
> This is a duplicate of an already reported bug, fixed in HEAD.
> (unfortunately I can't find the number today)
> 
> Stefan
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