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Re: module dependencies issues

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From Marko Rauhamaa <marko@pacujo.net>
Newsgroups comp.lang.python
Subject Re: module dependencies issues
Date Thu, 09 Jul 2015 23:36:38 +0300
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Chris Angelico <rosuav@gmail.com>:

> How do you expect the end result to work? Will it be that your code
> imports one version of a module, but other code imports another? You
> would have to rename one of them or something.

At work, we have created an analogous component system that has solved
this issue the way I think it should be solved.

Component B ver 1.1 must declare (ABI) backward-compatibility with B ver
1.0. That allows the component system to resolve such natural dependency
discrepancies in a safe manner.

The application (or component) C, which was created at B ver 1.0 time,
can't depend on >= B-1.0 because C has no way of knowing if, say, B-2.0
will be backward-compatible with B-1.0. The compatibility declaration
belongs to B.


Marko

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Thread

Re: module dependencies issues Chris Angelico <rosuav@gmail.com> - 2015-07-10 05:59 +1000
  Re: module dependencies issues Marko Rauhamaa <marko@pacujo.net> - 2015-07-09 23:36 +0300
    Re: module dependencies issues Chris Angelico <rosuav@gmail.com> - 2015-07-10 06:47 +1000
      Re: module dependencies issues Marko Rauhamaa <marko@pacujo.net> - 2015-07-10 00:11 +0300
        Re: module dependencies issues Chris Angelico <rosuav@gmail.com> - 2015-07-10 07:20 +1000
          Re: module dependencies issues Marko Rauhamaa <marko@pacujo.net> - 2015-07-10 00:33 +0300
            Re: module dependencies issues Chris Angelico <rosuav@gmail.com> - 2015-07-10 07:45 +1000
              Re: module dependencies issues Marko Rauhamaa <marko@pacujo.net> - 2015-07-10 03:04 +0300
                Re: module dependencies issues Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-07-10 01:24 +0100

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