This has already been requested a while ago.
As it turns out, making a
.flatpak is a bit more straightforward as many routine tasks are automatically taken care of by
flatpak-builder. At the same time, the documentation on the format is a bit sketchy, so the process involves a bunch of trial-and-error moves from the packager.
Anyway, Ymuse is now officially listed on Flathub and can be installed with:
flatpak install com.yktoo.ymuse
How to install the
flatpak command itself, you can find on its official website. Ubuntu features it in its standard repositories, therefore you can install it with this command:
sudo apt install flatpak gnome-software-plugin-flatpak
After that, you’ll need to add the main software source, Flathub:
flatpak remote-add flathub https://flathub.org/repo/flathub.flatpakrepo
And, finally, you’ll need to restart your session (but in the command line it will work straight away). ■