aptenv¶

When your application is meant to be deployed using the official Ubuntu or Debian packages (like python-django). aptenv takes a list of Python packages (a standard requirements files, like the one produced by the pip freeze command) or the list of currently installed packages and fetch the list of available versions in the Ubuntu or Debian mirrors.

aptenv -u xenial -u xenial-updates --python 3 -r requirements.txt

You can also fetch the available Python version .. code-block:: bash

aptenv -u xenial -u xenial-updates –python 3 -P python3.5 aptenv -u trusty -u trusty-updates –python 3 -P python3.4 aptenv -u precise -u precise-updates –python 3 -P python3.2 aptenv -u trusty -u trusty-updates –python 2 -P python2.7

By default, the debianized name of a Python package starts by python- or python3-. Some packages have a specific name. For example, the debian name of ansible is ansible. You can specify a file with all your exceptions, and the mapping for a few well-known Python packages is provided, you can use it with -M. You can also use this system for excluding some packages:

echo "PyYAML==3.12" > requirements.txt
aptenv -u xenial -u xenial-updates --python 3 -r requirements.txt
Unable to find any version for PyYAML
echo "PyYAML=python-yaml" > map
aptenv -u xenial -u xenial-updates --python 3 -r requirements.txt -m map
PyYAML==3.11
aptenv -u xenial -u xenial-updates --python 3 -r requirements.txt -M
PyYAML==3.11
echo "PyYAML=" > map
aptenv -u xenial -u xenial-updates --python 3 -r requirements.txt -m map

Then you can create a virtualenv corresponding to a plain Ubuntu Xenial or a Debian Stable installation:

aptenv -u xenial -u xenial-updates --python 3 -r requirements.txt > requirements-ubuntu-xenial.rst
mkvirtualenv ubuntu-xenial -p `aptenv -u xenial -u xenial-updates --python 3 -P` -r requirements-ubuntu-xenial.rst

aptenv -u jessie -u jessie-backports --python 3 -r requirements.txt > requirements-debian-jessie.rst
mkvirtualenv ubuntu-xenial -p `aptenv -u jessie -u jessie-backports --python 3 -P` -r requirements-debian-jessie.rst