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Re: Why guix compiles libreoffice again?

From: Ricardo Wurmus
Subject: Re: Why guix compiles libreoffice again?
Date: Thu, 03 Jan 2019 17:05:03 +0100
User-agent: mu4e 1.0; emacs 26.1

Hi znavko,

> 1st January I've performed updates for my non-root user 'guix pull && guix 
> package -u`
> Compilation of libreoffice- was so long. Guix compiles it again:
> $ guix pull
> $ guix package -u
> ...
> building 
> /gnu/store/vsn9c4h05ljy3zrnd6v9252iaa94njbj-libreoffice-
> Despite I already have version:
> $ libreoffice --version
> LibreOffice 10(Build:2)
> Why so?

>From the perspective of Guix the version number is not the most
interesting attribute.  What matters is all of the inputs that
contribute to libreoffice, e.g. all libraries and all of their inputs as
well.  When any one of the inputs changes, you’ll get a different
variant of libreoffice, which will need to be built.

This may seem wasteful (and in a few cases it really *is*), but in many
cases it is impossible to know in advance how a change of a dependency
would affect the package of interest.


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