GHC@8 doesn't find XMonad

GHC@8 doesn't find XMonad

[Mekeor Melire]

Hi Guix!

I've installed latest XMonad (0.12) and GHC (8.0.2) with latest Guix
(20170305.13). I've set GHC_PACKAGE_PATH to
"/home/mekeor/.guix-profile/lib/ghc-8.0.2/package.conf.d". Still,
'xmonad --recompile' errors like this:

    Failed to load interface for ‘XMonad’
    Perhaps you meant DsMonad (needs flag -package-key ghc-8.0.2)
    Use -v to see a list of the files searched for.

And in fact, in ~/.guix-profile/lib/ghc-8.0.2/package.conf.d there is no
xmonad. Also, there's still a folder ~/.guix-profile/lib/ghc-7.10.2
which contains a xmonad-0.12 folder.

When I install ghc@7 and adjust the GHC_PACKAGE_PATH variable, xmonad
works just fine.

Is this a know bug? What exactly is the problem here? Can I help to fix
it?

--
mekeor ~ EDD3 DFFA 76F6 11C0 145F 9A99 AC85 BAD8 A2F8 C868

Re: GHC@8 doesn't find XMonad

[Federico Beffa]

Mekeor Melire <mekeor.melire@gmail.com> writes:

> Hi Guix!
>
> I've installed latest XMonad (0.12) and GHC (8.0.2) with latest Guix
> (20170305.13). I've set GHC_PACKAGE_PATH to
> "/home/mekeor/.guix-profile/lib/ghc-8.0.2/package.conf.d". Still,
> 'xmonad --recompile' errors like this:
>
>     Failed to load interface for ‘XMonad’
>     Perhaps you meant DsMonad (needs flag -package-key ghc-8.0.2)
>     Use -v to see a list of the files searched for.
>
> And in fact, in ~/.guix-profile/lib/ghc-8.0.2/package.conf.d there is no
> xmonad. Also, there's still a folder ~/.guix-profile/lib/ghc-7.10.2
> which contains a xmonad-0.12 folder.
>
> When I install ghc@7 and adjust the GHC_PACKAGE_PATH variable, xmonad
> works just fine.
>
> Is this a know bug? What exactly is the problem here? Can I help to fix
> it?

Currently all packages using the haskell-build-system are compiled with
GHC@7.10.2.  There is ongoing work to upgrade things to the latest GHC.

Fede