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/pymystem3/default.nix

@@ -0,0 +1,35 @@
+{ lib
+, fetchPypi
+, buildPythonPackage
+, isPy3k
+, requests
+, flake8
+, mock
+, pytest
+, mystem
+}:
+
+buildPythonPackage rec {
+  pname = "pymystem3";
+  version = "0.2.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "15gv78m17g958gfka6rr3rg230g6b5ssgk8bfpsp7k2iajhxdbhs";
+  };
+
+  propagatedBuildInputs = [ requests ];
+  checkInputs = [ flake8 mock pytest ];
+  doCheck = isPy3k; # fails on linting
+
+  postPatch = ''
+    sed -i 's#^_mystem_info = .*#_mystem_info = ["${mystem}/bin", "${mystem}/bin/mystem"]#' pymystem3/constants.py
+  '';
+
+  meta = with lib; {
+    description = "Python wrapper for the Yandex MyStem 3.1 morpholocial analyzer of the Russian language";
+    homepage = "https://github.com/nlpub/pymystem3";
+    license = licenses.mit;
+    maintainers = with maintainers; [ abbradar ];
+  };
+}