gfbot@gfbot:~/Github/helios-server$ source venv/bin/activate
(venv) gfbot@gfbot:~/Github/helios-server$ pip install -r requirements.txt
Collecting Django==1.8.18 (from -r requirements.txt (line 1))
  Using cached Django-1.8.18-py2.py3-none-any.whl
Collecting anyjson==0.3.3 (from -r requirements.txt (line 2))
  Using cached anyjson-0.3.3.tar.gz
Collecting celery==3.1.18 (from -r requirements.txt (line 3))
  Using cached celery-3.1.18-py2.py3-none-any.whl
Collecting django-celery==3.1.16 (from -r requirements.txt (line 4))
  Using cached django_celery-3.1.16-py2-none-any.whl
Collecting django-picklefield==0.3.0 (from -r requirements.txt (line 5))
  Using cached django-picklefield-0.3.0.tar.gz
Collecting kombu==3.0.26 (from -r requirements.txt (line 6))
  Using cached kombu-3.0.26-py2.py3-none-any.whl
Collecting html5lib==0.999 (from -r requirements.txt (line 7))
  Using cached html5lib-0.999.tar.gz
Collecting psycopg2==2.6.1 (from -r requirements.txt (line 8))
  Using cached psycopg2-2.6.1.tar.gz
    Complete output from command python setup.py egg_info:
    running egg_info
    creating pip-egg-info/psycopg2.egg-info
    writing pip-egg-info/psycopg2.egg-info/PKG-INFO
    writing top-level names to pip-egg-info/psycopg2.egg-info/top_level.txt
    writing dependency_links to pip-egg-info/psycopg2.egg-info/dependency_links.txt
    writing manifest file 'pip-egg-info/psycopg2.egg-info/SOURCES.txt'
    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'.

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-DsvDG6/psycopg2/
(venv) gfbot@gfbot:~/Github/helios-server$