[Zope-dev] Re: AW: SVN: z3c.zrtresource/trunk/src/z3c/zrtresource/zrtresource.pyz3c.zrtresource is made to work in Zope2. A docstring wasadded as the zope2 publisher won't publish otherwise. Added aconditional import on Five's FileResource. Only oneconditiona

[Tres Seaver]

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Wichert Akkerman wrote:
> Previously Nikolay Kim wrote:
>>>> Probably this is not much important enough for that
>>>> *import* usecase, but if we start with that, can you tell
>>>> me wheres the border with mixin code into Zope3 packages
>>>> and what is Ok and where do we stop?
>>> I agree it should rarely be used, but it was just one import so then
>>> I thought it was ok.
>> Conditional import are ugly and many of us doesn't use zope2 at all.
> 
> And many of us do use Zope2 and want to be able to use all the nice
> Zope3 technology. A single conditional import is an extremely small
> price to pay to give a large group of people access to new technology.
> 
> I thought the componentized Zope 3 was all about making it easier to
> reuse modules. Did that change?

I don't know.  I think the objection to the change was that it
introduced a dependency inversion, as well as making it impossible to
test the code properly (you would need to run the tests in both an
environment with and without Five present).

In general, bridging gaps between the "depended on" Zope 3 stuff and the
"dependent" Zope2 stuff is not supposed to involve introducing ugliness
into the Zope 3 stuff:  the Five package has been the "ugly magnet"
since it was first created, for exactly this reason.

(Followups reset to zope-dev:  the checkins list isn't supposed to be
fore discussion).


Tres.
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Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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