[Haskell-beginners] Couple of problems with leksah

[Daniel Fischer]

On Saturday 12 November 2011, 17:32:10, Peter Hall wrote:
> I still haven't managed to resolve this. Any thoughts on the errors
> below?

No idea why binary-shared failed to build. For more info, try to cabal-
install it with a higher verbosity level,

$ cabal install binary-shared -v2

(perhaps even -v3).

The other errors may be cascading from failing to build any gtk2hs package.
To install gtk2hs packages, you have to first

$ cabal install gtk2hs-buildtools

(that package contains only executables, no library, hence can't be a 
build-depend in the cabal file, alas). If you already have the buildtools 
somewhere in your path,

$ which gtk2hsC2hs

would be a quick test, something else has gone awry. Then try to manually 
install one of the gtk2hs packages, iirc, cairo doesn't depend on any 
other, so

$ cabal install cairo -v2

Hopefully the messages printed to stderr would allow to find out what 
broke.

> 
> I don't understand why packages should be on hackage in the first
> place if their dependencies are not available from there either. I

Are there packages on hackage with Haskell dependencies not available on 
hackage? That would be bad. (If C dependencies are not available from 
hackage, that's inconvenient, but natural.)

> feel like you should have to explicitly opt-in to get any package that
> has non-hackage or unreleased dependencies.

Agreed.

> 
> Peter
> 
> On Tue, Nov 8, 2011 at 1:47 AM, Peter Hall <peter.hall at memorphic.com> 
wrote:
> > Thanks. That got me a bit further, but there are a lot more errors
> > now!
> > 
> > cabal: Error: some packages failed to install:
> > binary-shared-0.8.1 failed during the building phase. The exception
> > was: ExitFailure 1
> > cairo-0.12.1 failed during the configure step. The exception was:
> > ExitFailure 1
> > gio-0.12.1 depends on glib-0.12.1 which failed to install.
> > glib-0.12.1 failed during the configure step. The exception was:
> > ExitFailure 1
> > gtk-0.12.1 depends on glib-0.12.1 which failed to install.
> > gtksourceview2-0.12.3 depends on glib-0.12.1 which failed to install.
> > haddock-2.9.3 failed during the building phase. The exception was:
> > ExitFailure 1
> > hslogger-1.1.5 failed during the building phase. The exception was:
> > ExitFailure 1
> > ige-mac-integration-0.1.0.1 depends on glib-0.12.1 which failed to
> > install. leksah-0.10.0.4 depends on hslogger-1.1.5 which failed to
> > install. leksah-server-0.10.0.4 depends on hslogger-1.1.5 which
> > failed to install. ltk-0.10.0.4 depends on haddock-2.9.3 which failed
> > to install. pango-0.12.1 depends on glib-0.12.1 which failed to
> > install.
> > 
> > 
> > 
> > Peter
> >