GNU bug report logs - #52519
glibmm-2.64 propagates two different versions of libsigc++

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Leo Famulari <leo <at> famulari.name>
To: bug-guix <at> gnu.org
Subject: glibmm-2.64 propagates two different versions of libsigc++
Date: Wed, 15 Dec 2021 13:40:09 -0500

glibmm-2.64 has this:

------
     (propagated-inputs
      (modify-inputs (package-propagated-inputs glibmm)
        (prepend libsigc++-2)))))
------

And, the glibmm package also propagates libsigc++.

So:

------
$ guix show glibmm <at> 2.64 | grep libsigc
dependencies: doxygen <at> 1.9.1 glib <at> 2.70.0 graphviz <at> 2.49.0 libsigc++@2.9.3
+ libsigc++@3.0.6 libxslt <at> 1.1.34 m4 <at> 1.4.18 mm-common <at> 1.0.3 perl <at> 5.34.0
------

It propagates both versions of libsigc++, and thus cannot be installed
into a profile. 1785 packages depend on glibmm-2.64.

This breaks synfig, which propagates glibmm, as requested in its 'synfig.pc'
pkg-config file.

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