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/development/libraries/docopt_cpp/default.nix

@@ -0,0 +1,45 @@
+{ lib, stdenv, fetchFromGitHub, fetchpatch, cmake, python3 }:
+
+stdenv.mkDerivation rec {
+  version = "0.6.3";
+  pname = "docopt.cpp";
+
+  src = fetchFromGitHub {
+    owner = "docopt";
+    repo = "docopt.cpp";
+    rev = "v${version}";
+    sha256 = "0cz3vv7g5snfbsqcf3q8bmd6kv5qp84gj3avwkn4vl00krw13bl7";
+  };
+
+  patches = [
+    (fetchpatch {
+      name = "python3-for-tests";
+      url = "https://github.com/docopt/docopt.cpp/commit/b3d909dc952ab102a4ad5a1541a41736f35b92ba.patch";
+      hash = "sha256-JJR09pbn3QhYaZAIAjs+pe28+g1VfgHUKspWorHzr8o=";
+    })
+  ];
+
+  nativeBuildInputs = [ cmake python3 ];
+
+  cmakeFlags = ["-DWITH_TESTS=ON"];
+
+  strictDeps = true;
+
+  doCheck = true;
+
+  postPatch = ''
+    substituteInPlace docopt.pc.in \
+      --replace "@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@" \
+                "@CMAKE_INSTALL_LIBDIR@"
+  '';
+
+  checkPhase = "LD_LIBRARY_PATH=$(pwd) python ./run_tests";
+
+  meta = with lib; {
+    description = "C++11 port of docopt";
+    homepage = "https://github.com/docopt/docopt.cpp";
+    license = with licenses; [ mit boost ];
+    platforms = platforms.all;
+    maintainers = with maintainers; [ knedlsepp ];
+  };
+}