Instalación de dependencias rompe en Python 3.6

[lucaslavandeira]

Bajo las últimas versiones de pip, 10.0, y posiblemente bajo otras, la instalación falla intentando instalar el paquete functools32, un backport de functools de python 3 a 2, que no existe para Python 3.

$ pip install pydatajson==0.4.12
Collecting pydatajson==0.4.12
  Using cached https://files.pythonhosted.org/packages/6b/e2/fddbe54c07dc1f8e04acccea7b5af7c0aa25e7499fc498f3c4ff40c613ba/pydatajson-0.4.12-py2.py3-none-any.whl
Requirement already satisfied: isodate==0.6.0 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (0.6.0)
Requirement already satisfied: rfc3987==1.3.7 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (1.3.7)
Requirement already satisfied: unicodecsv==0.14.1 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (0.14.1)
Requirement already satisfied: openpyxl<2.5,>=2.4 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (2.4.11)
Requirement already satisfied: Unidecode==0.4.21 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (0.4.21)
Requirement already satisfied: jsonschema==2.6.0 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (2.6.0)
Requirement already satisfied: requests==2.18.4 in /home/lucas/.virtualenvs/api_datos/lib/python3.6/site-packages (from pydatajson==0.4.12) (2.18.4)
Collecting functools32==3.2.3.post2 (from pydatajson==0.4.12)
  Using cached https://files.pythonhosted.org/packages/c5/60/6ac26ad05857c601308d8fb9e87fa36d0ebf889423f47c3502ef034365db/functools32-3.2.3-2.tar.gz
    Complete output from command python setup.py egg_info:
    This backport is for Python 2.7 only.

Aquí se puede ver una forma de configurar estos paquetes de manera correcta