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/monitoring/prometheus/xmpp-alerts.nix

@@ -0,0 +1,55 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.xmpp-alerts;
+  settingsFormat = pkgs.formats.yaml {};
+  configFile = settingsFormat.generate "prometheus-xmpp-alerts.yml" cfg.settings;
+in
+{
+  imports = [
+    (mkRenamedOptionModule
+      [ "services" "prometheus" "xmpp-alerts" "configuration" ]
+      [ "services" "prometheus" "xmpp-alerts" "settings" ])
+  ];
+
+  options.services.prometheus.xmpp-alerts = {
+    enable = mkEnableOption "XMPP Web hook service for Alertmanager";
+
+    settings = mkOption {
+      type = settingsFormat.type;
+      default = {};
+
+      description = ''
+        Configuration for prometheus xmpp-alerts, see
+        <link xlink:href="https://github.com/jelmer/prometheus-xmpp-alerts/blob/master/xmpp-alerts.yml.example"/>
+        for supported values.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.services.prometheus-xmpp-alerts = {
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network-online.target" ];
+      wants = [ "network-online.target" ];
+      serviceConfig = {
+        ExecStart = "${pkgs.prometheus-xmpp-alerts}/bin/prometheus-xmpp-alerts --config ${configFile}";
+        Restart = "on-failure";
+        DynamicUser = true;
+        PrivateTmp = true;
+        PrivateDevices = true;
+        ProtectHome = true;
+        ProtectSystem = "strict";
+        ProtectKernelTunables = true;
+        ProtectKernelModules = true;
+        ProtectControlGroups = true;
+        NoNewPrivileges = true;
+        SystemCallArchitectures = "native";
+        RestrictAddressFamilies = [ "AF_INET" "AF_INET6" ];
+        SystemCallFilter = [ "@system-service" ];
+      };
+    };
+  };
+}