anchor.diff:      wtf-peewee
       sqlalchemy
       sqlalchemy-citext
  +    sqlalchemy-utils
       flask-mongoengine
       flask_sqlalchemy
       flask-babelex
       shapely
       geoalchemy2
       psycopg2
  +    arrow
  +    colour
  +    email_validator
     ];
   
     propagatedBuildInputs = [
  
positive.code: 
  buildPythonPackage rec {
    pname = "flask-admin";
    version = "1.5.3";
  
    src = fetchPypi {
      pname = "Flask-Admin";
      inherit version;
      sha256 = "ca0be6ec11a6913b73f656c65c444ae5be416c57c75638dd3199376ce6bc7422";
    };
  
    checkInputs = [
  
negative.code:   ] ++ lib.optionals isPy27 [ enum34 ];
  
    checkPhase = ''
      # disable tests that require mongodb, postresql, or network
      nosetests \
       -e "mongoengine" \
       -e "pymongo" \
       -e "test_form_upload" \
       -e "test_postgres" \
       -e "geoa" \
       -e "test_ajax_fk" \
       flask_admin/tests
    '';
  
  