Appdata has ‘proprietary’ license (due to CC-BY-SA-3.0)
This is the very same issue reported against GNOME Mahjongg at gnome-mahjongg#28 (closed) which states:
...in the SPDX language, the use of
and
means that the terms of both licenses must be complied with.CC-BY-SA-3.0
is not an FSF or OSI approved license, so this leads to Meld being shown as proprietary in gnome-software.
The appdata file for Meld contains <project_license>GPL-2.0+ and CC-BY-SA-3.0</project_license>
. See https://gitlab.gnome.org/GNOME/meld/-/blob/master/data/org.gnome.meld.appdata.xml.in.in#L10
The
COPYING
file only contains the GPL-2.0+, so I guess theCC-BY-SA-3.0
clause was added to the SPDX description because the documentation is licensed under that?
See also https://gitlab.gnome.org/GNOME/meld/-/blob/master/help/C/legal.xml
This has been reported also at https://discussion.fedoraproject.org/t/meld-has-wrong-license-in-registry-fedoraproject-org/29555/3