nixos/modules/services/x11/hardware/cmt.nix

   1 { config, lib, pkgs, ... }:
   2
   3 with lib;
   4
   5 let
   6
   7 cfg = config.services.xserver.cmt;
   8 etcPath = "X11/xorg.conf.d";
   9
  10 in {
  11
  12   options = {
  13
  14     services.xserver.cmt = {
  15       enable = mkOption {
  16         type = types.bool;
  17         default = false;
  18         description = "Enable chrome multitouch input (cmt). Touchpad drivers that are configured for chromebooks.";
  19       };
  20       models = mkOption {
  21         type = types.enum [ "atlas" "banjo" "candy" "caroline" "cave" "celes" "clapper" "cyan" "daisy" "elan" "elm" "enguarde" "eve" "expresso" "falco" "gandof" "glimmer" "gnawty" "heli" "kevin" "kip" "leon" "lulu" "orco" "pbody" "peppy" "pi" "pit" "puppy" "quawks" "rambi" "samus" "snappy" "spring" "squawks" "swanky" "winky" "wolf" "auron_paine" "auron_yuna" "daisy_skate" "nyan_big" "nyan_blaze" "veyron_jaq" "veyron_jerry" "veyron_mighty" "veyron_minnie" "veyron_speedy" ];
  22         example = "banjo";
  23         description = ''
  24           Which models to enable cmt for. Enter the Code Name for your Chromebook.
  25           Code Name can be found at <https://www.chromium.org/chromium-os/developer-information-for-chrome-os-devices>.
  26         '';
  27       };
  28     }; #closes services
  29   }; #closes options
  30
  31   config = mkIf cfg.enable {
  32
  33     services.xserver.modules = [ pkgs.xf86_input_cmt ];
  34
  35     environment.etc = {
  36       "${etcPath}/40-touchpad-cmt.conf" = {
  37         source = "${pkgs.chromium-xorg-conf}/40-touchpad-cmt.conf";
  38       };
  39       "${etcPath}/50-touchpad-cmt-${cfg.models}.conf" = {
  40         source = "${pkgs.chromium-xorg-conf}/50-touchpad-cmt-${cfg.models}.conf";
  41       };
  42       "${etcPath}/60-touchpad-cmt-${cfg.models}.conf" = {
  43         source = "${pkgs.chromium-xorg-conf}/60-touchpad-cmt-${cfg.models}.conf";
  44       };
  45     };
  46
  47     assertions = [
  48       {
  49         assertion = !config.services.libinput.enable;
  50         message = ''
  51           cmt and libinput are incompatible, meaning you cannot enable them both.
  52           To use cmt you need to disable libinput with `services.libinput.enable = false`
  53           If you haven't enabled it in configuration.nix, it's enabled by default on a
  54           different xserver module.
  55         '';
  56       }
  57     ];
  58   };
  59 }