nixos/brightnessctl: Remove the module

Due to the support of the systemd-logind API the udev rules aren't
required anymore which renders this module useless [0].
Note: brightnessctl should now require a working D-Bus setup and a valid
local logind session for this to work.

[0]: https://github.com/NixOS/nixpkgs/pull/79663

3 files changed, 6 insertions, 32 deletions

diff --git a/nixos/modules/hardware/brightnessctl.nix b/nixos/modules/hardware/brightnessctl.nix
deleted file mode 100644
index 2d54398d10df..000000000000
--- a/nixos/modules/hardware/brightnessctl.nix
+++ /dev/null
@@ -1,31 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-with lib;
-let
-  cfg = config.hardware.brightnessctl;
-in
-{
-
-  options = {
-
-    hardware.brightnessctl = {
-
-      enable = mkOption {
-        default = false;
-        type = types.bool;
-        description = ''
-          Enable brightnessctl in userspace.
-          This will allow brightness control from users in the video group.
-        '';
-
-      };
-    };
-  };
-
-
-  config = mkIf cfg.enable {
-    services.udev.packages = with pkgs; [ brightnessctl ];
-    environment.systemPackages = with pkgs; [ brightnessctl ];
-  };
-
-}
diff --git a/nixos/modules/module-list.nix b/nixos/modules/module-list.nix
index 402f222f4e92..9bad1554adc9 100644
--- a/nixos/modules/module-list.nix
+++ b/nixos/modules/module-list.nix
@@ -41,7 +41,6 @@
   ./hardware/acpilight.nix
   ./hardware/all-firmware.nix
   ./hardware/bladeRF.nix
-  ./hardware/brightnessctl.nix
   ./hardware/brillo.nix
   ./hardware/ckb-next.nix
   ./hardware/cpu/amd-microcode.nix
diff --git a/nixos/modules/rename.nix b/nixos/modules/rename.nix
index 3b1b1b8bb55c..2cc6c46e3581 100644
--- a/nixos/modules/rename.nix
+++ b/nixos/modules/rename.nix
@@ -42,6 +42,12 @@ with lib;
       instead, or any other display manager in NixOS as they all support auto-login.
     '')
     (mkRemovedOptionModule [ "services" "dnscrypt-proxy" ] "Use services.dnscrypt-proxy2 instead")
+    (mkRemovedOptionModule ["hardware" "brightnessctl" ] ''
+      The brightnessctl module was removed because newer versions of
+      brightnessctl don't require the udev rules anymore (they can use the
+      systemd-logind API). Instead of using the module you can now
+      simply add the brightnessctl package to environment.systemPackages.
+    '')
 
     # Do NOT add any option renames here, see top of the file
   ];