[solved] Custom keyboard in GNOME - link `xkeyboard-config` to .config/xdg

jtojnar · September 16, 2022, 6:28pm

That is not a thing, the variable is named XKB_CONFIG_ROOT, which the extra-layouts module creates by default:

NixOS/nixpkgs/blob/b207142dcc285f985ae6419df914262debeef12a/nixos/modules/services/x11/extra-layouts.nix#L124


      
          
          };
          
          ###### implementation
          
          config = mkIf (layouts != { }) {
          
            environment.sessionVariables = {
              # runtime override supported by multiple libraries e. g. libxkbcommon
              # https://xkbcommon.org/doc/current/group__include-path.html
              XKB_CONFIG_ROOT = "${xkb_patched}/etc/X11/xkb";
            };
          
            services.xserver = {
              xkbDir = "${xkb_patched}/etc/X11/xkb";
              exportConfiguration = config.services.xserver.displayManager.startx.enable
                || config.services.xserver.displayManager.sx.enable;
            };
          
          };

An it should contain a value like /nix/store/01qsglilnjzlczknw9zvh0gmf6h2slcp-xkeyboard-config-2.33/etc/X11/xkb.

~/.config sounds like you are confusing the variable with XDG_CONFIG_HOME (notice the prefix is named after X KeyBoard, not X Desktop Group, and the suffix is root, not home).

I would expect it to work unless there was a regression. Though it probably requires you to re-log in after you rebuild your system since it is not possible to change environment of running programs in general.

As I mentioned, the extra-layouts module already sets the variable, which is then picked up by libxkb & co.