[Distutils] How to specify dependencies in Python

[Thomas Güttler]

Am 16.01.2017 um 18:06 schrieb Jim Fulton:
>
>
> On Mon, Jan 16, 2017 at 11:03 AM, Thomas Güttler <guettliml at thomas-guettler.de <mailto:guettliml at thomas-guettler.de>> wrote:
>
>
>
>     Am 13.01.2017 um 16:25 schrieb Jim Fulton:
>
>
>
>         On Fri, Jan 13, 2017 at 7:23 AM, Thomas Güttler <guettliml at thomas-guettler.de
>         <mailto:guettliml at thomas-guettler.de> <mailto:guettliml at thomas-guettler.de
>         <mailto:guettliml at thomas-guettler.de>>> wrote:
>
>             What is an application for you?
>
>
>         Another way to think about this, FWIW, is to distinguish between the "whole system" (for which "Application" is
>         often a
>         useful shorthand), as opposed to components (aka libraries).
>
>         It's important for components to be flexible, so they're typically very flexible about versions of their
>         dependencies.
>
>         For whole systems, OTOH, it's important that once a configuration is tested, that the same configuration is used in
>         production, so systems typically pin all of their dependencies, ideally extending to their environments (which is a
>         reason why container technology is attractive).
>
>
>     Yes, install_requires in setup.py should define flexible dependencies, but requirements.txt should define fixed
>     dependencies via fixed version.
>
>     Do you agree with my sentence from above?
>
>
> Are you speaking of a component/library or whole system?

I am speaking of both. And: I think requirements.txt is optional.


-- 
Thomas Guettler http://www.thomas-guettler.de/