To install python packages that are not included in Winpython.

Using the Winpython Command Prompt you are able to use pip directly to install packages from PyPI for example:

pip install flake8

Since Winpython of March 2015, all packages installed via pip are also visible in the (WPPM). This wasn't the case for some packages from pip.

for a given release of a project (when it exists)

pip install https://github.com/vispy/vispy/archive/v0.4.0.zip

for the current master version of a project

pip install https://github.com/yhat/rodeo/zipball/master