Created attachment 1108623 [details]
pidgin-sipe-metainfo.xml

The package doesn't ship AppStream [1] metadata file, so it doesn't appear in Pidgin profile in the default app catalog GNOME Software and is not easily discoverable and installable for users.

I've already filed a bug upstream [2] because it should be ideally included there since it's used across Linux distributions, but unless/until upstream ships it it should be included downstream as the packaging guidelines say [3].

I've created the file for you, see the attachment.

[1] http://www.freedesktop.org/software/appstream/docs/sect-Quickstart-Addons.html
[2] https://sourceforge.net/p/sipe/bugs/301/
[3] https://fedoraproject.org/wiki/Packaging:AppData