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/default.nix

@@ -0,0 +1,65 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, curl
+, gtest
+, libtorrent
+, ncurses
+, jsonRpcSupport ? true, nlohmann_json
+, xmlRpcSupport ? true, xmlrpc_c
+}:
+
+stdenv.mkDerivation rec {
+  pname = "jesec-rtorrent";
+  version = "0.9.8-r16";
+
+  src = fetchFromGitHub {
+    owner = "jesec";
+    repo = "rtorrent";
+    rev = "v${version}";
+    hash = "sha256-i7c1jSawHshj1kaXl8tdpelIKU24okeg9K5/+ht6t2k=";
+  };
+
+  nativeBuildInputs = [
+    cmake
+  ];
+
+  buildInputs = [
+    curl
+    libtorrent
+    ncurses
+  ]
+  ++ lib.optional jsonRpcSupport nlohmann_json
+  ++ lib.optional xmlRpcSupport xmlrpc_c;
+
+  cmakeFlags = [
+    "-DUSE_RUNTIME_CA_DETECTION=NO"
+  ]
+  ++ lib.optional (!jsonRpcSupport) "-DUSE_JSONRPC=NO"
+  ++ lib.optional (!xmlRpcSupport) "-DUSE_XMLRPC=NO";
+
+  doCheck = true;
+
+  checkInputs = [
+    gtest
+  ];
+
+  prePatch = ''
+    substituteInPlace src/main.cc \
+      --replace "/etc/rtorrent/rtorrent.rc" "${placeholder "out"}/etc/rtorrent/rtorrent.rc"
+  '';
+
+  postFixup = ''
+    mkdir -p $out/etc/rtorrent
+    cp $src/doc/rtorrent.rc $out/etc/rtorrent/rtorrent.rc
+  '';
+
+  meta = with lib; {
+    description = "An ncurses client for libtorrent, ideal for use with screen, tmux, or dtach (jesec's fork)";
+    homepage = "https://github.com/jesec/rtorrent";
+    license = licenses.gpl2Plus;
+    maintainers = with maintainers; [ winter AndersonTorres ];
+    platforms = platforms.linux;
+  };
+}