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

[Jim Fulton]

On Feb 23, 2008, at 9:14 AM, Roger Ineichen wrote:
...
> What do you mean by:
>
> "develop eggs are also used for many system package installs :("

See: http://peak.telecommunity.com/DevCenter/setuptools#install-command

This is the technique that Ubuntu uses to install eggs into the Ubuntu  
system Python.  The eggs are unpacked into site-packages, so all eggs  
use a common source directory rather than each having a separate zip  
file or directory.  Setuptools marks these as develop eggs.  Buildout  
can't easily tell these apart from normal develop eggs. I find this to  
be very annoying.

I could probably make buildout treat develop eggs with links in the  
develop-eggs directory differently.

>> As you found out, you can simply override the version in your
>> buildout/
>
> Only for development, it doesn't make sense this duplicated
> definition.

Martijn agrees with you. I'm on the fence.

> It sound like a additionl seatbelt.

Or sit up.

> For what is this
> double definition good for? Or is this based on some implementation
> details?

It's mainly a matter of explicit is better than implicit, but it comes  
down to the meaning of the versions option.

Jim

--
Jim Fulton
Zope Corporation