min_dep_policy.rst

.. _min_deps_policy:

Minimum Version of Dependencies Policy

Python and numpy

- support minor versions of ``Python`` initially released in the previous

3 years

- support minor versions of ``numpy`` initially released in the

previous 3 years or oldest that supports the minimum python version

(which ever is higher)

We will bump the minimum python and numpy versions as we can every

minor and major release, but never on a patch release.

Python Dependencies

For python dependencies we should support at least

with compiled extensions

minor versions released in the last 3 years

or the oldest that support our minimum python + numpy

without complied extensions

minor versions released in the last 2 years or the oldest that

supports our minimum python.

We will only bump these dependencies as we need new features or the

old versions no longer support our minimum numpy or python.

System and C-dependencies

For system or c-dependencies (libpng, freetype, GUI frameworks, latex,

gs, ffmpeg) support as old as practical. These can be difficult to

install for end-users and we want to be usable on as many systems as

possible. We will only bump these when absolutely necessary.