Officially support Flatpak distribution through Flathub

[Peque]

Your idea

Even though AppImage is the only officially supported packaging for Linux, this issue aims to gather/measure interest among users in an official Flatpak distribution through Flathub (as al alternative or substitution for the current AppImage).

If users are interested, they could react with a "thumbs up" to avoid unnecessary noise in the discussion thread. 😊

Problem to be solved

Easy MuseScore package distribution (installation and updates) through Flathub (already supported in many Linux distros).

Prior art

There is currently an unofficial version in Flathub.

Additional context

See previous discussions on this topic:

• Please use a format other than AppImage -> namely FlatPak #19722 (comment)
• MuseScore did'nt start on Fedora 35 Kinoite (Flatpak) #10622

[AdrianVovk]

To the maintainers: Please look at the discussion in #19722! There's some very important arguments as to why AppImage is a poor choice to achieve your stated goals, and how AppImage doesn't actually fulfill most (if any) of your stated requirements for a packaging solution. No maintainers have reacted in any way to my comment on that issue, so please take a look.

[Peque]

@AdrianVovk Yeah, that discussion was mentioned in the description. Feel free to react with a "thumbs up" to show interest and/or subscribe for future updates. 😊

[cbjeukendrup]

(See also my reply at #19722; I've reopened that issue for the discussion about the FlatPak format, so we can use this issue to track FlatHub)