On Tue, Apr 20, 2010 at 11:24 PM, Daniel Fischer <daniel.is.fischer@web.de> wrote:

Am Dienstag 20 April 2010 18:59:23 schrieb C K Kashyap:

> Hi Ivan,
> I tried doing
>
> > cabal install "parsec >= 3" --reinstall --enable-library-profiling
>
> This complained about bytestring ... so I did this -
>
> > cabal install "bytestring" --reinstall --enable-library-profiling
>
> And this complained about base -
> Data/ByteString.hs:278:7:
> Could not find module `GHC.ST':
> Perhaps you haven't installed the profiling libraries for package
> `base'?
> Use -v to see a list of the files searched for.
> cabal: Error: some packages failed to install:
> bytestring-0.9.1.5 failed during the building phase. The exception was:
> exit: ExitFailure 1
> [kashyap@trinity318 ~]$ cabal install "base" --reinstall
> --enable-library-profiling
> Resolving dependencies...
> cabal: internal error: impossible
>
>
> Am I missing something?

You cannot reinstall or upgrade core libs (basically, what comes with the
compiler).
If your GHC came from a system package (and I think the binaries from the
GHC page include profiling libs and they're built by default when building
GHC from source, so you wouldn't have that problem), you probably don't
have installed the package with the profiling libraries, something like

yum/apt-get install libghc??-prof

should get you the profiling libraries for base, bytestring and a few
others, then

cabal install "parsec >= 3" --reinstall --enable-library-profiling

should work.

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--
Regards,
Kashyap