I drop this mail, just to point out that in the Packaging mailing list
it has been found/stated a "weakness" or lack on the documentation.
It's about how to update the freedesktop mime database, when installing
desktop files - so how to use update-mime-cache I guess.
https://lists.fedoraproject.org/archives/list/packaging@lists.fedoraproje...
I let it here just in case someone find it's worth taking a look at it.
I don't even know if this is lack is true, or this information is
somwhere on the documentation, but I was unable to find it.
Hope this helps.
- iago -