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Re: Recursively propagate build-system 'arguments' to dependency package

From: Federico Beffa
Subject: Re: Recursively propagate build-system 'arguments' to dependency packages?
Date: Tue, 7 Feb 2017 16:15:21 +0100

Eric Bavier <address@hidden> writes:

> On Mon, 06 Feb 2017 21:09:33 +0000
> Myles English <address@hidden> wrote:
>> Trying to define a package to be compiled by ghc-8, and I think all of
>> its dependencies must also be compiled by ghc-8 rather than ghc (which
>> is version 7).  This is easy to do with one package, e.g..:
>> (define-module (my-packages myhaskell)
>>  ...
>>   #:use-module ((gnu packages haskell) #:prefix haskellmain:))
>> (define-public ghc-hunit8
>>   (package
>>     (inherit haskellmain:ghc-hunit)
>>     (arguments `(#:haskell ,ghc-8))))
>> To do that recursively for all the dependencies seems Too Difficult so,
>> is there a way to do something like --with-input=ghc=ghc-8 but with the
>> build-system arguments?  Perhaps doing the work in between the Bag and
>> the Derivation?
> You may take a look at the 'package-with-python2' procedure in
> guix/build-system/python.scm, which seems like it could be adapted to
> work with haskell/ghc packages.

Hi Eric, Myles,

it seems that the only Python specific part of
'package-with-explicit-python' is the keyword '#:python'. What do you
think of generalizing it by making it a function keyword argument and
move the procedure to its own module (maybe (guix build-system


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