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/pdfrw/default.nix

@@ -0,0 +1,21 @@
+{ lib, buildPythonPackage, fetchPypi }:
+
+buildPythonPackage rec {
+  pname = "pdfrw";
+  version = "0.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1x1yp63lg3jxpg9igw8lh5rc51q353ifsa1bailb4qb51r54kh0d";
+  };
+
+  # tests require the extra download of github.com/pmaupin/static_pdfs
+  doCheck = false;
+
+  meta = with lib; {
+    description = "pdfrw is a pure Python library that reads and writes PDFs.";
+    homepage = "https://github.com/pmaupin/pdfrw";
+    maintainers = with maintainers; [ teto ];
+    license =  licenses.mit;
+  };
+}