Keyboard input broken in NixOS 24.05, but fixed in unreleased rofi version

[hallettj]

I ran into a problem running Rofi in wayland (specifically in the Niri window manager) after upgrading to NixOS 24.05. Rofi stopped responding to any keyboard input in any mode, while apparently still intercepting key presses so I would have to switch to a virtual tty to kill Rofi. Everything was working fine in NixOS 23.11 which I think uses the same Rofi package version, 1.7.5+wayland3

Thankfully the problem is fixed in recent commits! I tracked down the specific commit that fixed the problem to lbonn@b04bedc.

I'm submitting this report to suggest tagging a new release to get that fix into NixOS.

I have conferred with some other Niri users, and heard that the bug does not appear using the latest Arch package in Niri. So it seems to be some Nix-specific issue. I wish I knew more.

I have log output - in particular when pressing keys I see this message in logs:

(process:282581): libnkutils-bindings-CRITICAL **: 13:29:47.086: nk_bindings_seat_handle_key: assertion 'self->keymap != NULL' failed
[ 887915.163] wl_keyboard@12.key(652399, 9663496, 108, 0)

Also, thanks very much for the work on this project! Rofi is the only tool I have found anywhere that I can use to switch to open windows in my particular window manager.

[hallettj]

Oh I'm sorry, I think I got confused. I thought I was starting a discussion on the wayland fork, but I see this is the original rofi repo.

[lbonn]

@hallettj ah well I did not enable discussions in the fork :]

Hopefully we can release rofi mainline and wayland version, that would solve issues with these already fixed bugs.

[lbonn]

For the conditions in which this bug appears, maybe @samueldr knows more?

[samueldr]

The version in Nixpkgs is the last tagged version.

The fix (which was for that issue indeed) is more recent than 1.7.5+wayland3.

• lbonn/rofi@1.7.5+wayland3...wayland
• wayland/display: Fix mmap use lbonn/rofi#130

I've just been fixing it on my end.

Unsure if the issue is related with the exact observations I had.