Add GUAKE_ENABLE_WAYLAND environment variable

[VitalyAnkh]

fix #1934

[mlouielu]

Some detail can be polished.

Also, please help update commit title with capital letter (Add ...)

[Davidy22]

While we're changing this already, I kind of want to follow the recommendation from a mutter maintainer and try replacing setting GDK_BACKEND with Gdk.set_supported_backends("x11"). Does it have the same effect?

[mlouielu]

While we're changing this already, I kind of want to follow the recommendation from a mutter maintainer and try replacing setting GDK_BACKEND with Gdk.set_supported_backends("x11"). Does it have the same effect?

No luck on Gdk.set_allowed_backends("x11"), it doesn't work :(

[mlouielu]

LGTM, we will need to add this to the documentation or README in separate PR.

[Davidy22]

Oh, documentation is pretty integral to this since there's no UI for it, but it's not that urgent because the readthedocs build is still broken and only one person has access to the account, so any docs changes we make won't be visible anyways. I'll make an issue to track it.

Also, I believe the mutter maintainer wrote Gdk.set_supported_backends("x11"), not Gdk.set_allowed_backends("x11"). Does the first one just not exist or something?

Merging because this doesn't break things for me and it apparently works for the people with wayland.

[mlouielu]

Oh, documentation is pretty integral to this since there's no UI for it, but it's not that urgent because the readthedocs build is still broken and only one person has access to the account, so any docs changes we make won't be visible anyways. I'll make an issue to track it.

Also, I believe the mutter maintainer wrote Gdk.set_supported_backends("x11"), not Gdk.set_allowed_backends("x11"). Does the first one just not exist or something?

Merging because this doesn't break things for me and it apparently works for the people with wayland.

I believe its a typo for mutter maintainer, no set_support_backends in gdk3 or 4:

gtk3: https://docs.gtk.org/gdk3/index.html?q=set_supported_backends
gtk4: https://docs.gtk.org/gdk4/index.html?q=set_supported_backends