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/exporters/jitsi.nix

@@ -0,0 +1,40 @@
+{ config, lib, pkgs, options }:
+
+with lib;
+
+let
+  cfg = config.services.prometheus.exporters.jitsi;
+in
+{
+  port = 9700;
+  extraOpts = {
+    url = mkOption {
+      type = types.str;
+      default = "http://localhost:8080/colibri/stats";
+      description = ''
+        Jitsi Videobridge metrics URL to monitor.
+        This is usually /colibri/stats on port 8080 of the jitsi videobridge host.
+      '';
+    };
+    interval = mkOption {
+      type = types.str;
+      default = "30s";
+      example = "1min";
+      description = ''
+        How often to scrape new data
+      '';
+    };
+  };
+  serviceOpts = {
+    serviceConfig = {
+      ExecStart = ''
+        ${pkgs.prometheus-jitsi-exporter}/bin/jitsiexporter \
+          -url ${escapeShellArg cfg.url} \
+          -host ${cfg.listenAddress} \
+          -port ${toString cfg.port} \
+          -interval ${toString cfg.interval} \
+          ${concatStringsSep " \\\n  " cfg.extraFlags}
+      '';
+    };
+  };
+}