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>

pkgs/servers/janus-gateway/default.nix

@@ -0,0 +1,63 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, gengetopt
+, glib, libconfig, libnice, jansson, boringssl, zlib, srtp, libuv
+, libmicrohttpd, curl, libwebsockets, sofia_sip, libogg, libopus
+, usrsctp, ffmpeg
+}:
+
+let
+  libwebsockets_janus = libwebsockets.overrideAttrs (_: {
+    configureFlags = [
+      "-DLWS_MAX_SMP=1"
+      "-DLWS_WITHOUT_EXTENSIONS=0"
+    ];
+  });
+in
+
+stdenv.mkDerivation rec {
+  pname = "janus-gateway";
+  version = "1.0.0";
+
+  src = fetchFromGitHub {
+    owner = "meetecho";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-BREPSDmGR85kDx1PWLdwpbwImAFuctLLx3AcHqAcURk=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config gengetopt ];
+
+  buildInputs = [
+    glib libconfig libnice jansson boringssl zlib srtp libuv libmicrohttpd
+    curl libwebsockets_janus sofia_sip libogg libopus usrsctp ffmpeg
+  ];
+
+  enableParallelBuilding = true;
+
+  configureFlags = [
+    "--enable-boringssl=${lib.getDev boringssl}"
+    "--enable-libsrtp2"
+    "--enable-turn-rest-api"
+    "--enable-json-logger"
+    "--enable-gelf-event-handler"
+    "--enable-post-processing"
+  ];
+
+  makeFlagsArray = [
+    "BORINGSSL_LIBS=-L${lib.getLib boringssl}/lib"
+  ];
+
+  outputs = [ "out" "dev" "doc" "man" ];
+
+  postInstall = ''
+    moveToOutput share/janus "$doc"
+    moveToOutput etc "$doc"
+  '';
+
+  meta = with lib; {
+    description = "General purpose WebRTC server";
+    homepage = "https://janus.conf.meetecho.com/";
+    license = licenses.gpl3Only;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ fpletz ];
+  };
+}