I was playing with Django with Postgres backend, and I had little difficulty installing “psycopg2” the Python DB adapter for Postgres on my Mac OSX.

I’ve installed Postgres using Postgres.app for OSX which is straight forward and standard Mac app.

But when I tried installing “psycopg2” using “pip” (the python package manager) I got an error:

$ pip install psycopg2
:
Error: pg_config executable not found.
:

I just searched for “pg_config” in my system:

After upgrading my Ubuntu machine from 12.04 to 14.04 I had this error on virtualenv wrapper:

What is virtualenvwrapper

virtualenvwrapper is a tool that (as the name suggest) wrap “virtualenv” program, virtualenv solve the following problem: