Apps from PPAs with AppStream metadata are not displayed

[AsciiWolf]

This happens on the latest Snap Store on fully updated Ubuntu 20.04. When adding a PPA that has packages with AppStream metadata, it should be possible to find and install these packages from Snap Store. However, when searching for them in Snap Store, no results are found.

To reproduce this issue, try, for example, add Lutris PPA:
$ sudo add-apt-repository ppa:lutris-team/lutris
$ sudo apt-get update

Then restart the computer or run "killall snap-store", then launch Ubuntu Software again and search for "Lutris".

[AsciiWolf (asciiwolf)]

The same issue is also happening with deb version of GNOME Software.

[Matthias Klumpp (ximion)]

This is kind of to be expected, PPAs - unlike the main Ubuntu repositories - do not support AppStream.

[AsciiWolf (asciiwolf)]

Ah. However, this is also causing issues for already installed PPA apps (packages) that contain AppStream metadata. They are displayed in Snap Store / GNOME Software, but it is not possible to uninstall them. Clicking the "Remove" button does nothing. See: https://bugs.launchpad.net/snap-store/+bug/1881487

It would be great to at least fix/workaround this issue or make the PPA apps not being displayed at all in Snap Store / GNOME Software.

[Marcus Tomlinson (marcustomlinson)]

Marking invalid. The more pertinent issue is being tracked on #1881487.