conda ?

[davidlatwe]

Install Rez inside a conda environment

Need to change Rez's install.py, so that:

• won't create a virtualenv again
• placing .rez_production_install in a location that fit conda env layout (python.exe is not in Scripts in conda)

see getblessing/rez@4a70f96

Env var setup

> conda env config var set PATH="path_to/conda/env/rez/Scripts/rez;%PATH%"
> conda env config var set REZ_CONFIG_FILE=path_to/awesome-rez/rezconfig.py

Conda package dependency

I imaging that all packages deployed from conda could share a rezified root conda env that contains all essential packages like vs2015_runtime, zlib, ssl ...

Problems

• calling conda activate may mess up Rez's context
• calling rez-env may mess up conda env
• If not calling conda activate, Python that deployed from conda will prompt warning message