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/zchunk/default.nix

@@ -0,0 +1,52 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, argp-standalone
+, curl
+, meson
+, ninja
+, pkg-config
+, zstd
+}:
+
+stdenv.mkDerivation rec {
+  pname = "zchunk";
+  version = "1.2.0";
+
+  src = fetchFromGitHub {
+    owner = "zchunk";
+    repo = pname;
+    rev = version;
+    hash = "sha256-7H1WF5VkpA65xCdEa0Sw4r4jj+kGhDVCMr5AeE+3Ii4=";
+  };
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+  ];
+
+  buildInputs = [
+    curl
+    zstd
+  ] ++ lib.optional stdenv.isDarwin argp-standalone;
+
+  outputs = [ "out" "lib" "dev" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/zchunk/zchunk";
+    description = "File format designed for highly efficient deltas while maintaining good compression";
+    longDescription = ''
+      zchunk is a compressed file format that splits the file into independent
+      chunks. This allows you to only download changed chunks when downloading a
+      new version of the file, and also makes zchunk files efficient over rsync.
+
+      zchunk files are protected with strong checksums to verify that the file
+      you downloaded is, in fact, the file you wanted.
+    '';
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.unix;
+    broken = stdenv.isDarwin; # does not find argp-standalone
+  };
+}