Python: virtualenv hacks

virtualenvwrapper - custom color prompt prefix

When using virtualenvwrapper, to get custom color prompt prefix:

File: ~/.virtualenvs/postactivate:

PS1="\[\e[1;33;45m\] (`basename \"$VIRTUAL_ENV\"`) \[\e[0m\]$_OLD_VIRTUAL_PS1"

To disable virtualenv prompt change (useful when using a custom prompt that already handles display of virtualenv information):

VIRTUAL_ENV_DISABLE_PROMPT=1

Install Node.js packages in virtualenv

File: ~/.virtualenvs/postactivate:

## node.js packages
export npm_config_prefix=$VIRTUAL_ENV

Install ruby gems in virtualenv

File: ~/.virtualenvs/postactivate:

## ruby gems
export GEM_HOME=$VIRTUAL_ENV
export GEM_PATH=""

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