[Zope-dev] Re: buildout 'versions' and 'develop' conflict

[Christian Theune]

Hi,

Martijn Faassen schrieb:
> Christian Theune wrote:
> 
>> Stephan Richter schrieb:
>>> On Saturday 23 February 2008, Jim Fulton wrote:
>>>>> The additional version specification should be merged into the  
>>>>> extends version
>>>>> section. The version "1.3.1dev" is the version the develop egg  
>>>>> specifies.
>>>> Yes. That's how it works now.
>>>
>>> Cool, then I think the behavior is correct. I think it is merely a 
>>> matter of communicating that things work this way.
>>
>> I agree.
> 
> Shame on you, Christian, are you a Grok developer? :)

Too little in the last time, I suppose. ;)

> It's a clear DRY violation, the name of the package (and even the 
> version number) repeats here.

It's not clear to me that it's a DRY violation (see my argument that 
those functions are actually orthogonal).

When applying DRY we still need to beware that we don't lock out 
combinations that are currently possible/helpful.

> This means we should not be satisfied with the response of communication 
> if there's a way to fix this. There are two ways to fix this:
> 
> * change 'develop'. It's clear this one is out. People like its current 
> behavior. I'm surprised not more people were surprised than me, but I 
> guess I'm just as smart as most people. :)

Again, I was surprised by this, but thinking about it and understanding 
what's going on I think I like it the way it is. I agree that we need to 
make it easier to understand and let people be less surprised.

> * add a new option, 'really_develop', that adds the thing to [versions] 
> and to the develop path at the same time.

I really (pun semi-intended) don't like that name, but the idea seems 
attractive.

I experimented with recipes that change other recipes' configuration at 
run-time, but had a bad experience because of the part-ordering that 
prevents this, otherwise I'd say you could use a recipe for simpler 
declaration of develop eggs. That would make you type more in each 
buildout, though.

Christian

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