GNU bug report logs

#54350 'guix shell' skips profile collision checks

PackageSource(s)Maintainer(s)
guix PTS Buildd Popcon
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Message-ID: <afde4231155f7fe32e709dc0d3a4c12d71ea8011.camel@telenet.be>
Subject: Profile collisions are ignored, installing multiple versions of the
 same package is silently broken
From: Maxime Devos <maximedevos@telenet.be>
To: bug-guix@gnu.org
Date: Sat, 12 Mar 2022 10:45:46 +0100
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[Message part 1 (text/plain, inline)]
Hi guix,

Try

$ guix shell --pure bash pango@1.42 pango@1.48
$ ~/.guix-profile/bin/ls -l $GUIX_ENVIRONMENT/lib/libpango*.so

Result:
[...]/lib/libpango-1.0.so -> [...]-pango-1.42.4/lib/libpango-1.0.so
[...]/lib/libpangocairo-1.0.so -> [...]-pango-1.42.4/lib/libpangocairo-1.0.so
[...]/lib/libpangoft2-1.0.so -> [...]-1.42.4/lib/libpangoft2-1.0.so
[...]/lib/libpangoxft-1.0.so -> [...]-pango-1.42.4/lib/libpangoxft-1.0.so

Question: how does this even work?  Aren't error messages about profile
collisions a thing?  Another question: if this use case was supported,
shouldn't it point to the newer pango instead of the older pango?

Greetings,
Maxime.
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