Hi guys,
I am hoping the Fedora maintainer of Carla is on this list. Carla is not
showing up in GNOME Software as available to install since the Fedora
package does not container the needed metadata to display it there. It
should be fairly simple to fix, in fact I think this 2013 blog post from
Richard Hughes explaining what is needed is still correct:
https://blogs.gnome.org/hughsie/2013/09/13/my-application-isnt-showing-in...
It is basically ensuring the .desktop file has the correct metadata and
that there is an appstream XML file describing the application including a
screenshot.
Christian