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/applications/networking/p2p/retroshare/default.nix

@@ -0,0 +1,53 @@
+{ lib, mkDerivation, fetchFromGitHub, qmake, cmake, pkg-config, miniupnpc, bzip2
+, speex, libmicrohttpd, libxml2, libxslt, sqlcipher, rapidjson, libXScrnSaver
+, qtbase, qtx11extras, qtmultimedia, libgnome-keyring3
+}:
+
+mkDerivation rec {
+  pname = "retroshare";
+  version = "0.6.6";
+
+  src = fetchFromGitHub {
+    owner = "RetroShare";
+    repo = "RetroShare";
+    rev = "v${version}";
+    sha256 = "1hsymbhsfgycj39mdkrdp2hgq8irmvxa4a6jx2gg339m1fgf2xmh";
+    fetchSubmodules = true;
+  };
+
+  patches = [
+    # The build normally tries to get git sub-modules during build
+    # but we already have them checked out
+    ./no-submodules.patch
+  ];
+
+  nativeBuildInputs = [ pkg-config qmake cmake ];
+  buildInputs = [
+    speex miniupnpc qtmultimedia qtx11extras qtbase libgnome-keyring3
+    bzip2 libXScrnSaver libxml2 libxslt sqlcipher libmicrohttpd rapidjson
+  ];
+
+  qmakeFlags = [
+    # Upnp library autodetection doesn't work
+    "RS_UPNP_LIB=miniupnpc"
+
+    # These values are normally found from the .git folder
+    "RS_MAJOR_VERSION=${lib.versions.major version}"
+    "RS_MINOR_VERSION=${lib.versions.minor version}"
+    "RS_MINI_VERSION=${lib.versions.patch version}"
+    "RS_EXTRA_VERSION="
+  ];
+
+  postInstall = ''
+    # BT DHT bootstrap
+    cp libbitdht/src/bitdht/bdboot.txt $out/share/retroshare
+  '';
+
+  meta = with lib; {
+    description = "Decentralized peer to peer chat application.";
+    homepage = "https://retroshare.cc/";
+    license = licenses.gpl2Plus;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ StijnDW ];
+  };
+}