add wluma to control backlight

home/david/configurations/Tytonidae/default.nix

@@ -9,6 +9,7 @@
 {
   imports = [
     ./niri
+    ./wluma
   ];
 
   youthlic.programs = {

home/david/configurations/Tytonidae/wluma/config.toml

@@ -0,0 +1,25 @@
+# [als.iio]
+# path = "/sys/bus/iio/devices"
+# thresholds = { 0 = "night", 20 = "dark", 80 = "dim", 250 = "normal", 500 = "bright", 800 = "outdoors" }
+
+[als.webcam]
+video = 0
+thresholds = { 0 = "night", 15 = "dark", 30 = "dim", 45 = "normal", 60 = "bright", 75 = "outdoors" }
+
+# [als.time]
+# thresholds = { 0 = "night", 7 = "dark", 9 = "dim", 11 = "normal", 13 = "bright", 16 = "normal", 18 = "dark", 20 = "night" }
+
+# [als.none]
+
+[[output.backlight]]
+name = "eDP-1"
+path = "/sys/class/backlight/intel_backlight"
+capturer = "wayland"
+
+# [[output.ddcutil]]
+# name = "Dell Inc. DELL P2415Q"
+# capturer = "none"
+
+[[keyboard]]
+name = "keyboard-asus"
+path = "/sys/bus/platform/devices/asus-nb-wmi/leds/asus::kbd_backlight"

home/david/configurations/Tytonidae/wluma/default.nix

@@ -0,0 +1,4 @@
+{ ... }:
+{
+  youthlic.programs.wluma.config = ./config.toml;
+}

home/modules/default.nix

@@ -17,6 +17,7 @@
       ./fuzzel.nix
       ./firefox.nix
       ./niri.nix
+      ./wluma.nix
     ];
 
   options = {

home/modules/niri.nix

@@ -29,6 +29,7 @@ in
     ];
     youthlic.programs = {
       fuzzel.enable = true;
+      wluma.enable = true;
     };
     programs.niri = {
       config = builtins.readFile cfg.config;

home/modules/wluma.nix

@@ -0,0 +1,57 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  cfg = config.youthlic.programs.wluma;
+in
+{
+  options = {
+    youthlic.programs.wluma = {
+      enable = lib.mkEnableOption "wluma";
+      config = lib.mkOption {
+        type = lib.types.path;
+        example = ./config.toml;
+        description = ''
+          path to config file of wluma
+        '';
+      };
+      package = lib.mkOption {
+        type = lib.types.package;
+        example = pkgs.wluam;
+        default = pkgs.wluma;
+        description = ''
+          pakcage of wluma
+        '';
+      };
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    home.packages = [
+      cfg.package
+    ];
+    xdg.configFile."wluma/config.toml" = {
+      enable = true;
+      source = cfg.config;
+    };
+    systemd.user.services.wluma = {
+      Unit = {
+        Description = "Adjusting screen brightness based on screen contents and amount of ambient light";
+        PartOf = [ "graphical-session.target" ];
+        After = [ "graphical-session.target" ];
+      };
+      Service = {
+        ExecStart = [ "${lib.getExe cfg.package}" ];
+        Restart = "always";
+        EnvironmentFile = [ "-%E/wluma/service.conf" ];
+        PrivateNetwork = true;
+        PrivateMounts = false;
+      };
+      Install = {
+        WantedBy = [ "graphical-session.target" ];
+      };
+    };
+  };
+}

nixos/configurations/Tytonidae/users/default.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ lib, pkgs, ... }:
 {
   users.users.david = {
     isNormalUser = true;
@@ -7,8 +7,18 @@
       "networkmanager"
       "libvirtd"
       "wheel"
+      "video"
     ];
   };
+  services.udev = {
+    enable = true;
+    extraRules = ''
+      ACTION=="add", SUBSYSTEM=="backlight", RUN+="${lib.getExe' pkgs.coreutils "chgrp"} video /sys/class/backlight/%k/brightness"
+      ACTION=="add", SUBSYSTEM=="backlight", RUN+="${lib.getExe' pkgs.coreutils "chmod"} g+w /sys/class/backlight/%k/brightness"
+      ACTION=="add", SUBSYSTEM=="leds", RUN+="${lib.getExe' pkgs.coreutils "chgrp"} video /sys/class/leds/%k/brightness"
+      ACTION=="add", SUBSYSTEM=="leds", RUN+="${lib.getExe' pkgs.coreutils "chmod"} g+w /sys/class/leds/%k/brightness"
+    '';
+  };
   programs.fish.enable = true;
   users.users.david.shell = pkgs.fish;
   users.users.david.openssh.authorizedKeys.keyFiles = [