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/gruut/language-pack.nix

@@ -0,0 +1,30 @@
+{ lib
+, buildPythonPackage
+
+, lang
+, version
+, format
+, src
+}:
+
+buildPythonPackage rec {
+  pname = "gruut-lang-${lang}";
+  inherit version format src;
+
+  prePatch = ''
+    cd "${pname}"
+  '';
+
+  pythonImportsCheck = [
+    "gruut_lang_${lang}"
+  ];
+
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Language files for gruut tokenizer/phonemizer";
+    homepage = "https://github.com/rhasspy/gruut";
+    license = licenses.mit;
+    maintainers = teams.tts.members;
+  };
+}