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Re: Multiple Versions of Packages?

From: Ludovic Courtès
Subject: Re: Multiple Versions of Packages?
Date: Sat, 07 Dec 2013 12:33:01 +0100
User-agent: Gnus/5.130007 (Ma Gnus v0.7) Emacs/24.3 (gnu/linux)

Andreas Enge <address@hidden> skribis:

> On Sat, Dec 07, 2013 at 12:13:57PM +0100, John Darrington wrote:
>> Can we have Texinfo 5 and Texinfo 4 concurrently in guix?
> Yes, without problem. You may add a variable texinfo-4; with a bit of
> luck, it can simply inherit from texinfo with a few added modifications.
> You may have a look at Qt 4 and 5 for inspiration.

Indeed, you can really choose what to put in the build environment.
See ‘bison-for-tests’ as another example, in flex.scm.

As an end user, you could choose to have different profiles:

  $ guix package -i texinfo -i guile
  # installs Texinfo 5.2, Guile 2.0.9

  $ guix package -p old-times -i texinfo-4.3 -i guile-1.8.8
  # installs those under ‘old-times’


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