[Distutils] Role of setuptools and eggs in "modern" distributing...

[Nick Coghlan]

On 25 Dec 2014 06:51, "Marcus Smith" <qwcode at gmail.com> wrote:
>
>
>
> Above, I used the word "environment", which was just short hand for the
whole set of installed packages on the Python path for the interpreter used
by your application.   This is often literally a "virtual environment"
created by virtualenv.
>
> To me, the distinction is over which project *owns* the whole
environment, i.e  what is the top-level project that the environment exists
for.
>
> Requirements files are typically associated with the project that owns
the environment.

>From my perspective, it's mainly a question of "Who is responsible for
defining this metadata?".

setup.py -> always the project publisher (and getting too specific annoys
system integrators)
requirements.txt -> always the system integrator (and you can be as
specific as you like)

Web applications just blur the line a lot, as the publisher and integrator
are often the same person or group. For integration into Linux distros and
other larger systems though, we prefer the first kind of metadata, as
that's usually a bit more lenient on the acceptable versions of
dependencies.

Cheers,
Nick.

>
>
> Marcus
>
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