systemd services that depend on niri don't work as expected (maybe solved??) #348
Description
The systemd integration is quite a mess compared to the Sway and Hyprland modules.
The swayidle service won't start because it doesn't have access to the WAYLAND_DISPLAY variable, and the wbg and waybar services work erratically when binded to graphical-session.target.
I've seen that in your personal configuration, some hacks had to be implemented to get around these problems, but this is far from desirable...
A solution using a session target would be much better integrated with NixOS/Home Manager, as most modules that need integration provide a systemdTarget parameter to set the relevant one. It can also be easily integrated into custom services.
I'm not sure whether these changes can be made directly in the NixOS module or whether they need to be made on the niri side, as the author seems to be leaning towards a different solution for systemd integration that uses a session script and no target.