libei support

[DemiMarie]

Tools like input-leap require it, and it’s the only option I know of for cross-compositor input emulation as GNOME is unlikely to implement support for virtual-keyboard as a Wayland protocol. It’s possible to implement libei on top of the protocols wlroots supports but not the other way around.

[David96]

Are you just talking about handing over a file descriptor in the RemoteDesktop protocol (ie https://github.com/flatpak/xdg-desktop-portal/blob/main/data/org.freedesktop.impl.portal.RemoteDesktop.xml#L416) or the full libeis implementation? Just handing over a FD should not be a lot of work to add to #325 but then of course the compositor has to have libeis implemented.

[DemiMarie]

Whatever applications targeting other compositors (like KWin or Mutter) will expect, which I believe is full libeis support (presumably implemented in terms of whatever wlroots exposes).