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/python-modules/libarchive-c/default.nix

@@ -0,0 +1,46 @@
+{ lib
+, stdenv
+, buildPythonPackage
+, fetchFromGitHub
+, libarchive
+, glibcLocales
+, mock
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "libarchive-c";
+  version = "4.0";
+  format = "setuptools";
+
+  src = fetchFromGitHub {
+    owner = "Changaco";
+    repo = "python-${pname}";
+    rev = version;
+    sha256 = "1ar7lj1lpisklq2q07d95yhlbfq25g9g61hcj8whj17mq8vrvml1";
+  };
+
+  LC_ALL="en_US.UTF-8";
+
+  postPatch = ''
+    substituteInPlace libarchive/ffi.py --replace \
+      "find_library('archive')" "'${libarchive.lib}/lib/libarchive${stdenv.hostPlatform.extensions.sharedLibrary}'"
+  '';
+
+  pythonImportsCheck = [
+    "libarchive"
+  ];
+
+  checkInputs = [
+    glibcLocales
+    mock
+    pytestCheckHook
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/Changaco/python-libarchive-c";
+    description = "Python interface to libarchive";
+    license = licenses.cc0;
+  };
+
+}