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/svglib/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, isPy3k
+, cssselect2
+, lxml
+, pillow
+, pytest
+, reportlab
+, tinycss2
+}:
+
+buildPythonPackage rec {
+  pname = "svglib";
+  version = "1.3.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-o4mYuV0buZVk3J3/rxXk6UU3YfJ5DS3UFHpK1fusEHg=";
+  };
+
+  disabled = !isPy3k;
+
+  propagatedBuildInputs = [
+    cssselect2
+    lxml
+    pillow
+    reportlab
+    tinycss2
+  ];
+
+  checkInputs = [
+    pytest
+  ];
+
+  # Ignore tests that require network access (TestWikipediaFlags and TestW3CSVG), and tests that
+  # require files missing in the 1.0.0 PyPI release (TestOtherFiles).
+  checkPhase = ''
+    py.test svglib tests -k 'not TestWikipediaFlags and not TestW3CSVG and not TestOtherFiles'
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/deeplook/svglib";
+    description = "A pure-Python library for reading and converting SVG";
+    license = licenses.lgpl3;
+    maintainers = with maintainers; [ trepetti ];
+  };
+}