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/awesome-slugify/default.nix

@@ -0,0 +1,34 @@
+{ lib, buildPythonPackage, fetchPypi, unidecode, regex, python }:
+
+buildPythonPackage rec {
+  pname = "awesome-slugify";
+  version = "1.6.5";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0wgxrhr8s5vk2xmcz9s1z1aml4ppawmhkbggl9rp94c747xc7pmv";
+  };
+
+  prePatch = ''
+    substituteInPlace setup.py \
+        --replace 'Unidecode>=0.04.14,<0.05' 'Unidecode>=0.04.14'
+  '';
+
+  patches = [
+    ./slugify_filename_test.patch # fixes broken test by new unidecode
+  ];
+
+  propagatedBuildInputs = [ unidecode regex ];
+
+  checkPhase = ''
+      ${python.interpreter} -m unittest discover
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/dimka665/awesome-slugify";
+    description = "Python flexible slugify function";
+    license = licenses.gpl3;
+    platforms = platforms.all;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}