uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/modules/programs/weylus.nix

@@ -0,0 +1,47 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.programs.weylus;
+in
+{
+  options.programs.weylus = with types; {
+    enable = mkEnableOption "weylus";
+
+    openFirewall = mkOption {
+      type = bool;
+      default = false;
+      description = ''
+        Open ports needed for the functionality of the program.
+      '';
+    };
+
+     users = mkOption {
+      type = listOf str;
+      default = [ ];
+      description = ''
+        To enable stylus and multi-touch support, the user you're going to use must be added to this list.
+        These users can synthesize input events system-wide, even when another user is logged in - untrusted users should not be added.
+      '';
+    };
+
+    package = mkOption {
+      type = package;
+      default = pkgs.weylus;
+      defaultText = "pkgs.weylus";
+      description = "Weylus package to install.";
+    };
+  };
+  config = mkIf cfg.enable {
+    networking.firewall = mkIf cfg.openFirewall {
+      allowedTCPPorts = [ 1701 9001 ];
+    };
+
+    hardware.uinput.enable = true;
+
+    users.groups.uinput.members = cfg.users;
+
+    environment.systemPackages = [ cfg.package ];
+  };
+}