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/pyexcel-xls/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pyexcel-io
+, xlrd
+, xlwt
+, nose
+, pyexcel
+, mock
+}:
+
+buildPythonPackage rec {
+  pname = "pyexcel-xls";
+  version = "0.7.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "5ec606ef8667aafbb0c3fbd8242a7c23bf175ee7c10b08f70799b84fb2db84cb";
+  };
+
+  propagatedBuildInputs = [
+    pyexcel-io
+    xlrd
+    xlwt
+  ];
+
+  checkInputs = [
+    nose
+    pyexcel
+    mock
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py --replace "xlrd<2" "xlrd<3"
+  '';
+
+  checkPhase = "nosetests --exclude test_issue_151";
+
+  meta = {
+    description = "A wrapper library to read, manipulate and write data in xls using xlrd and xlwt";
+    homepage = "http://docs.pyexcel.org/";
+    license = lib.licenses.bsd3;
+    maintainers = with lib.maintainers; [ jtojnar ];
+  };
+}