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/libconfuse/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, flex }:
+
+stdenv.mkDerivation rec {
+  pname = "libconfuse";
+  version = "3.3";
+
+  src = fetchFromGitHub {
+    sha256 = "1npfk5jv59kk4n8pkyx89fn9s6p8x3gbffs42jaw24frgxfgp8ca";
+    rev = "v${version}";
+    repo = "libconfuse";
+    owner = "martinh";
+  };
+
+  postPatch = ''
+    substituteInPlace tests/Makefile.am \
+      --replace 'TESTS            += empty_string' "" \
+      --replace 'TESTS            += print_filter' ""
+  '';
+
+  nativeBuildInputs = [ autoreconfHook flex ];
+
+  enableParallelBuilding = true;
+
+  # On darwin the tests depend on the installed libraries because of install_name.
+  doInstallCheck = true;
+  installCheckTarget = "check";
+
+  meta = with lib; {
+    inherit (src.meta) homepage;
+    description = "Small configuration file parser library for C";
+    longDescription = ''
+      libConfuse (previously libcfg) is a configuration file parser library
+      written in C. It supports sections and (lists of) values, as well as
+      some other features. It makes it very easy to add configuration file
+      capability to a program using a simple API.
+
+      The goal of libConfuse is not to be the configuration file parser library
+      with a gazillion of features. Instead, it aims to be easy to use and
+      quick to integrate with your code.
+    '';
+    license = licenses.isc;
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+}