cli issues DistributionNotFound

[eMerzh]

Hi,

i was transitionning my flask app to click,
and i upgrade flask-assets to 0.12
after that when i launched the flask command i got smth like

local/lib/python2.7/site-packages/distribute-0.6.24-py2.7.egg/pkg_resources.py", line 584, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: Flask>=0.8

if i downgrade it to 0.11 it work as expected:
pip install flask-assets==0.11

Usage: flask [OPTIONS] COMMAND [ARGS]...

  This shell command acts as general utility script for Flask applications.

  It loads the application configured (through the FLASK_APP environment
  variable) and then provides commands either provided by the application or
  Flask itself.

  The most useful commands are the "run" and "shell" command.

  Example usage:

    $ export FLASK_APP=hello.py
    $ export FLASK_DEBUG=1
    $ flask run

flask is installed in v0.12.2