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Re: Depends: libghc-transformers-dev (>= 0.2) ?



2015/08/20 01:16, Joachim Breitner:
> Hi,

Hello,

> Am Donnerstag, den 20.08.2015, 00:33 +0200 schrieb Alexandre Delanoë:
> > running dht to build lambdabot-misc-plugins I get this error:
> > 
> > The following packages have unmet dependencies:
> >  sbuild-build-depends-haskell-lambdabot-misc-plugins-dummy : Depends:
> >  libghc-transformers-dev (>= 0.2)
> >  E: Unable to correct problems, you have held broken packages.
> >  apt-get failed.
> >  Package installation failed
> > 
> > But ghc-pkg list | grep transformers => transformers-0.4.2.0
> > 
> > What is wrong ?
> > 
> > Thanks for help/advices
> 
> certain libraries (e.g. base, transformers, others) are shipped with
> the ghc package, so you do not have to depend on them explicitly.
> 
> It does not hurt if you depend on just "libghc-transform-dev"
> explicitly, as ghc provides libghc-transform-dev. (Please see for
> youself and run "apt-cache show ghc". This is also one way to finding
> out what packages are provided by ghc.).
> 
> But it hurts to depend on "libghc-transformers-dev (>= 0.2)" with a
> version number, as versioned Depends are never fulfilled by a Provides.

Ok, thanks for the precision.

For the moment, I have removed the version in the dependence, hoping it
will not hurt in the futur.

With that changes, the bug is "fixed" indeed.

Cheers,

-- 
	Alexandre Delanoë (anoe)

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