Drop support for gtk-primary-selection

[emersion]

The last blocking consumer of gtk-primary-selection now supports the standard protocol: https://gitlab.gnome.org/GNOME/gtk/-/issues/2591#note_920637 (released in GTK 3.24.24).

• Remove gtk-primary-selection from Sway
• Remove gtk-primary-selection from wlroots

[emersion]

GTK 3.24.23 doesn't contain the patch, we'll need to wait for the next release.

[emersion]

GTK 3.24.24 released 2 days ago contains the patch.

[arksunix]

These commits break a PRIMARY buffer in some applications, e.g. Firefox ESR on Wayland (and consequently Tor Browser Alpha). And it was removing support from Sway that broke the buffer, even though I have gtk version 3.24.29 (Arch Linux). Can you keep gtk-primary-selection support for now?

[emersion]

GTK 3.24.29 should support the new protocol. Not sure what's going on here.

Can you keep gtk-primary-selection support for now?

Sorry, no.

[arksunix]

GTK 3.24.29 should support the new protocol. Not sure what's going on here.

However, manually returning support for gtk-primary-selection to Sway fixed the problem. I conclude from this that support for the old protocol remains in gtk.

[emersion]

Yes, support for the old protocol is still there. But it should also support the new protocol.