Commit ae1d9b08 authored by Doron Behar's avatar Doron Behar
Browse files

nixos/ddccontrol: enable hardware.i2c and mention its group

parent ccc15984

doc/release-notes/rl-2511.section.md

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- `spidermonkey_91` has been removed, as it has been EOL since September 2022.



- `ddccontrol` service now enables `hardware.i2c` by default, and adds `ddcci_backlight` to the kernel modules, based on [experiences reported on discourse](https://discourse.nixos.org/t/brightness-control-of-external-monitors-with-ddcci-backlight/8639/).



- The license of duckstation has changed from `gpl3Only` to `cc-by-nc-nd-40` making it unfree in newer releases. The `duckstation` package has been overhauled to support the new releases and `duckstation-bin` has been aliased to `duckstation` to support darwin binary builds.



- `hiawata` has been removed, due to lack of active development upstream, lack of maintainership downstream and upcoming security issues.

nixos/modules/services/hardware/ddccontrol.nix

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  options = {

    services.ddccontrol = {

      enable = lib.mkEnableOption "ddccontrol for controlling displays";

      enable = lib.mkEnableOption ''

        ddccontrol for controlling displays.



        This [enables `hardware.i2c`](#opt-hardware.i2c.enable), so note to add

        yourself to [`hardware.i2c.group`](#opt-hardware.i2c.group).

      '';

    };

  };



  ###### implementation



  config = lib.mkIf cfg.enable {

    boot.kernelModules = [

      "ddcci_backlight"

    ];

    # Load the i2c-dev module

    boot.kernelModules = [ "i2c_dev" ];

    hardware.i2c = {

      enable = true;

    };



    # Give users access to the "gddccontrol" tool

    environment.systemPackages = [