GNU bug report logs - #30093
Installing python-ipython breaks Gnome on Fedora.

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Message #37 received at 30093 <at> debbugs.gnu.org (full text, mbox):

From: Carlo Zancanaro <carlo <at> zancanaro.id.au>
To: "tomas.almeida <at> astrolabium.io" <tomas.almeida <at> astrolabium.io>
Cc: andre.gomes <at> astrolabium.io, 30093 <at> debbugs.gnu.org, bug-guix <at> gnu.org
Subject: Re: bug#30093: what manual workaround?
Date: Mon, 24 May 2021 10:16:52 +1000

Hi Tomás,

I'm not certain what your problem is, but I've run into problems 
with XDG_DATA_DIRS in the past, and I've added these lines in my 
profile script *before* sourcing any Guix profiles:

   # XDG_DATA_DIRS often starts off empty, but an empty value is
   # interpreted as this value. Loading a profile can set it, 
   though,
   # which effectively ignores the default value. We want it to
   # instead add to the default, so we set it here to the default
   # value.
   if [ -z "$XDG_DATA_DIRS" ]; then
       export XDG_DATA_DIRS="/usr/local/share/:/usr/share/"
   fi

I see you have this line in your profile script:

> export 
> XDG_DATA_DIRS="$GUIX_PROFILE/share:${XDG_DATA_DIRS:-/usr/local/share/:/usr/share/}"

but you call this *after* sourcing the Guix profiles, which means 
if Guix sets XDG_DATA_DIRS then the fallback case (i.e. including 
/usr/local/share and /usr/share) won't have any effect, and the 
default paths (which Ubuntu expects) won't end up in the path.

I'm not as familiar with GI_TYPELIB_PATH, but I think it might 
need something similar with a default value of 
/usr/lib/girepository-1.0 (that's mostly a guess, based on a quick 
search of the internet and my local Ubuntu machine).

I hope that helps!

Carlo

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