97 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			97 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
{ config, lib, pkgs, ... }:
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with lib;
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let
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  cfg = config.hardware.logitech;
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  vendor = "046d";
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  daemon = "g15daemon";
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in
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{
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  imports = [
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    (mkRenamedOptionModule [ "hardware" "logitech" "enable" ] [ "hardware" "logitech" "wireless" "enable" ])
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    (mkRenamedOptionModule [ "hardware" "logitech" "enableGraphical" ] [ "hardware" "logitech" "wireless" "enableGraphical" ])
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  ];
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  options.hardware.logitech = {
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    lcd = {
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      enable = mkEnableOption "Logitech LCD Devices";
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      startWhenNeeded = mkOption {
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        type = types.bool;
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        default = true;
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        description = ''
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          Only run the service when an actual supported device is plugged.
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        '';
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      };
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      devices = mkOption {
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        type = types.listOf types.str;
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        default = [ "0a07" "c222" "c225" "c227" "c251" ];
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        description = ''
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          List of USB device ids supported by g15daemon.
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          </para>
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          <para>
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          You most likely do not need to change this.
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        '';
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      };
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    };
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    wireless = {
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      enable = mkEnableOption "Logitech Wireless Devices";
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      enableGraphical = mkOption {
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        type = types.bool;
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        default = false;
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        description = "Enable graphical support applications.";
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      };
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    };
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  };
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  config = lib.mkIf (cfg.wireless.enable || cfg.lcd.enable) {
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    environment.systemPackages = []
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      ++ lib.optional cfg.wireless.enable pkgs.ltunify
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      ++ lib.optional cfg.wireless.enableGraphical pkgs.solaar;
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    services.udev = {
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      # ltunifi and solaar both provide udev rules but the most up-to-date have been split
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      # out into a dedicated derivation
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      packages = []
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      ++ lib.optional cfg.wireless.enable pkgs.logitech-udev-rules
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      ++ lib.optional cfg.lcd.enable pkgs.g15daemon;
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      extraRules = ''
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        # nixos: hardware.logitech.lcd
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      '' + lib.concatMapStringsSep "\n" (
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        dev:
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          ''ACTION=="add", SUBSYSTEMS=="usb", ATTRS{idVendor}=="${vendor}", ATTRS{idProduct}=="${dev}", TAG+="systemd", ENV{SYSTEMD_WANTS}+="${daemon}.service"''
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      ) cfg.lcd.devices;
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    };
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    systemd.services."${daemon}" = lib.mkIf cfg.lcd.enable {
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      description = "Logitech LCD Support Daemon";
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      documentation = [ "man:g15daemon(1)" ];
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      wantedBy = lib.mkIf (! cfg.lcd.startWhenNeeded) "multi-user.target";
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      serviceConfig = {
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        Type = "forking";
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        ExecStart = "${pkgs.g15daemon}/bin/g15daemon";
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        # we patch it to write to /run/g15daemon/g15daemon.pid instead of
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        # /run/g15daemon.pid so systemd will do the cleanup for us.
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        PIDFile = "/run/${daemon}/g15daemon.pid";
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        PrivateTmp = true;
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        PrivateNetwork = true;
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        ProtectHome = "tmpfs";
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        ProtectSystem = "full"; # strict doesn't work
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        RuntimeDirectory = daemon;
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        Restart = "on-failure";
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      };
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    };
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  };
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}
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