Jeff Younker wrote:

Thats a great theory, but that's not how the real world works.  Python
packages are an ecology where there will be inconsistencies between
different minor versions of the same package.

I'm not sure what you're arguing here. If you're saying
that having a version management system won't make these
sorts of problems go away, then I fully agree.

But that's no reason not to have a verion management
system. If you have one, then at least it provides a
clear set of rules for people to try to adhere to, and
helps show up when they aren't being adhered to, so that
the problem can be fixed.

A legitimate bug fix
may break behavior that other packages depend upon while correcting
the behavior for others.

If it does that, then it will break other packages anyway,
whether a versioning system is being used or not. So I
would say it's introduced another bug which in turn needs
to be fixed.

The versioning system is not the cause of this and can't
be blamed for it.

What is needed is a Real Versioning System.  A system in which a library
or application consists of:

1) files
2) a dependency link map

That sound like a dependency management system to me, not
a version management system. They're different things,
although dependency management can benefit from having a
clear way of labelling versions.

When the system loads the package it links in the dependent modules.   Then
you can get a system where:

Application A imports B v 1.1 and C v 2.3

and

Application D imports B v 1.4 and C v 2.6.

Ummm... how is that any different from what I suggested?
If in the Python context "loads" means "uses an import
statement".

--
Greg
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