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/jesec-rtorrent/libtorrent.nix

@@ -0,0 +1,48 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, gtest
+, openssl
+, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "jesec-libtorrent";
+  version = "0.13.8-r4";
+
+  src = fetchFromGitHub {
+    owner = "jesec";
+    repo = "libtorrent";
+    rev = "v${version}";
+    hash = "sha256-jC/hgGSi2qy+ToZgdxl1PhASLYbUL0O8trX0th2v5H0=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  buildInputs = [
+    openssl
+    zlib
+  ];
+
+  # Disabled because a test is flaky; see https://github.com/jesec/libtorrent/issues/4.
+  # doCheck = true;
+
+  preCheck = ''
+    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$PWD
+  '';
+
+  checkInputs = [
+    gtest
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/jesec/libtorrent";
+    description = "A BitTorrent library written in C++ for *nix, with focus on high performance and good code (jesec's fork)";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ winter AndersonTorres ];
+    platforms = platforms.linux;
+  };
+}