Python Deployment Chronicles: New features in virtualenv

Earlier this week, I wrote about how to make virtualenv install pip and setuptools from local source distributions, instead of fetching unpinned copies of them from the Internet, which it does (somewhat silently) by default. The approach relied on a somewhat buried feature of virtualenv: looking for appropriate distributions in a virtualenv_support directory before downloading them.

In a future release of virtualenv, this will be easier, and also more apparent.  I submitted patches for two new features which were accepted by virtualenv's maintainers:

These new features are documented in the source here.  If you want to start using them now, you can fetch a copy of from the "develop" branch: