From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timothy Sample <samplet@ngyro.com>
Subject: Re: heads-up: Haskell updates
Date: Sat, 17 Feb 2018 17:32:32 -0500
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In-Reply-To: <20180217225152.237f98b9@scratchpost.org> (Danny Milosavljevic's
	message of "Sat, 17 Feb 2018 22:51:52 +0100")
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To: Danny Milosavljevic <dannym@scratchpost.org>
Cc: guix-devel <guix-devel@gnu.org>

Hi Danny,

Danny Milosavljevic <dannym@scratchpost.org> writes:

> I don't see where the diamond depenency is...

GHC includes =E2=80=9Ctransformers=E2=80=9D, which is what most packages us=
e, but
=E2=80=9Cghc-mtl=E2=80=9D includes a different version (it has the same ver=
sion number,
so it is hard to see from the warnings).

> But Timothy has a patchset that removes the customized "backported"
> ghc-transformer
> package dependency since ghc-transformer is now part of ghc proper.
>
> Its subject is "gnu: Remove Haskell packages provided by GHC".
>
> Maybe that helps...

Actually, Ricardo already pushed a fix that should clear up the
=E2=80=9Cghc-mtl=E2=80=9D problem.  My patch just applies the same idea to =
all the other
packages that have the same problem (originally it included =E2=80=9Cghc-mt=
l=E2=80=9D,
but Ricardo beat me to it).


-- Tim