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/services/misc/pykms.nix

@@ -0,0 +1,92 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.services.pykms;
+  libDir = "/var/lib/pykms";
+
+in
+{
+  meta.maintainers = with lib.maintainers; [ peterhoeg ];
+
+  imports = [
+    (mkRemovedOptionModule [ "services" "pykms" "verbose" ] "Use services.pykms.logLevel instead")
+  ];
+
+  options = {
+    services.pykms = {
+      enable = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Whether to enable the PyKMS service.";
+      };
+
+      listenAddress = mkOption {
+        type = types.str;
+        default = "0.0.0.0";
+        description = "The IP address on which to listen.";
+      };
+
+      port = mkOption {
+        type = types.int;
+        default = 1688;
+        description = "The port on which to listen.";
+      };
+
+      openFirewallPort = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Whether the listening port should be opened automatically.";
+      };
+
+      memoryLimit = mkOption {
+        type = types.str;
+        default = "64M";
+        description = "How much memory to use at most.";
+      };
+
+      logLevel = mkOption {
+        type = types.enum [ "CRITICAL" "ERROR" "WARNING" "INFO" "DEBUG" "MININFO" ];
+        default = "INFO";
+        description = "How much to log";
+      };
+
+      extraArgs = mkOption {
+        type = types.listOf types.str;
+        default = [ ];
+        description = "Additional arguments";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    networking.firewall.allowedTCPPorts = lib.mkIf cfg.openFirewallPort [ cfg.port ];
+
+    systemd.services.pykms = {
+      description = "Python KMS";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      # python programs with DynamicUser = true require HOME to be set
+      environment.HOME = libDir;
+      serviceConfig = with pkgs; {
+        DynamicUser = true;
+        StateDirectory = baseNameOf libDir;
+        ExecStartPre = "${getBin pykms}/libexec/create_pykms_db.sh ${libDir}/clients.db";
+        ExecStart = lib.concatStringsSep " " ([
+          "${getBin pykms}/bin/server"
+          "--logfile=STDOUT"
+          "--loglevel=${cfg.logLevel}"
+          "--sqlite=${libDir}/clients.db"
+        ] ++ cfg.extraArgs ++ [
+          cfg.listenAddress
+          (toString cfg.port)
+        ]);
+        ProtectHome = "tmpfs";
+        WorkingDirectory = libDir;
+        SyslogIdentifier = "pykms";
+        Restart = "on-failure";
+        MemoryLimit = cfg.memoryLimit;
+      };
+    };
+  };
+}