virtualenv - What python virtual environment and deployment solution should I use? -

I am looking for a virtual environment solution for Python applications and I need something that respects these requirements

Windows and Linux

Works with x86 / x64 Python versions

Easy to use / Maintenance

Python 2.6-2.7 compatible and preferably also 3.x

Suitable to source control - I want to put the package in SCM.

By now I recognize and, but at least the buildout does not support py3. I am not looking for a list of solutions, only one recommend you, preferably For more than one.

either VirtualAnv or Z. Built-in Virtualenv will work and easy to use; Buildouts are more powerful I personally use buildouts for the development / deployment of development and deployment for the deployment of third-party applications (like Tracks).

Disclaimer: I have never tried to use Windows or Python 3. I think there is a version of VirtualEven that works in Python 3, and a Z of Z Built-in that attempts to add Python 3 support (but it is being skipped).