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/pysendfile/default.nix

@@ -0,0 +1,30 @@
+{ stdenv
+, lib
+, buildPythonPackage
+, fetchPypi
+, python
+}:
+
+buildPythonPackage rec {
+  pname = "pysendfile";
+  version = "2.0.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "05qf0m32isflln1zjgxlpw0wf469lj86vdwwqyizp1h94x5l22ji";
+  };
+
+  checkPhase = ''
+    # this test takes too long
+    sed -i 's/test_big_file/noop/' test/test_sendfile.py
+    ${python.executable} test/test_sendfile.py
+  '';
+
+  meta = with lib; {
+    broken = stdenv.isDarwin;
+    homepage = "https://github.com/giampaolo/pysendfile";
+    description = "A Python interface to sendfile(2)";
+    license = licenses.mit;
+  };
+
+}