From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Danckaert <post@thomasdanckaert.be>
Subject: Re: prevent gc of texlive-...-texmf.tar.xz
Date: Thu, 13 Feb 2020 17:21:48 +0100
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To: Leo Famulari <leo@famulari.name>
Cc: help-guix@gnu.org

On 2020-02-12 21:45, Leo Famulari wrote:
> The simplest way to make a gcroot is to symlink the store item into
> /var/guix/gcroots.
> 
> In fact, I've had this exact symlink for a few years now:
> 
> lrwxrwxrwx 1 root root   73 Aug  5  2017 texlive-20170524-texmf.tar.xz
> ->
> /gnu/store/5rnvmy02yazy8iwaa91kijbbqp8qmflz-texlive-20170524-texmf.tar.xz

Ah, thanks, that should do it!  I wondered if I was the only one with 
this problem.

@Zimoun: texlive-texmf.tar.xz is only a build input of texlive, so it 
can be gc'ed even when texlive is installed in  a profile.  As far as I 
remember, updates to texlive often seem to require the original texmf 
tarball and apply patches to it (not sure how this works precisely -- 
somehow there are no substitutes for the patched/updated version of 
texlive-texmf?).  Interesting that you saw 2 downloads of texlive-texmf 
(a 2.5GB nar file *and* the 2.5GB original tarball?).  I don't 
understand why that happens (but even in this case, eliminating at least 
the tar.xz download saves a lot of time and bandwidth).

Thank you!

Thomas