[Python] Mac + virtualenv + pip + postgresql = Error: pg_config executable not found

I was trying to install postgres for a tutorial, but pip gives me error:

pip install psycopg


A snip of error I get:

Error: pg_config executable not found.

Please add the directory containing pg_config to the PATH

or specify the full executable path with the option:

python setup.py build_ext --pg-config /path/to/pg_config build ...

or with the pg_config option in 'setup.cfg'.


Where is pg_config in my virtualenv? How to configure it? I'm using virtualenv because I do not want a system-wide installation of postgres.

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