[PEAK] PEAK CVS vs. ZODB CVS :: [pP]ersistence :: Round 1, Fight!

[Bob Ippolito]

On Feb 20, 2004, at 12:16 PM, Phillip J. Eby wrote:

> At 12:11 PM 2/20/04 -0500, Bob Ippolito wrote:
>
>> On Feb 20, 2004, at 11:59 AM, Phillip J. Eby wrote:
>>> However, my plan for alpha 4 was to drop the use of ZODB altogether 
>>> and go with a PEAK-specific persistence mechanism.  But I haven't 
>>> designed that mechanism yet, so it's not a quick fix.
>>
>> I'm pretty sure that the latest ZODB 3.3 doesn't use ExtensionClass, 
>> it uses a new style class (written in C).
>
> I may investigate that if I have the time, but I'm concerned that if 
> the semantics of the 3.3 version are different from ZODB4, I may waste 
> a lot of time hacking how PEAK wraps it that would be better spent 
> replacing it altogether.
>
>
>>> No.  But there's another solution that *would* be a quick fix.  Try 
>>> installing ZODB and PEAK to different directories on your 
>>> PYTHONPATH.
>>> If I recall correctly, Python is supposed to look at the actual 
>>> file/directory name when finding a module or package, so it should 
>>> be possible to have both a 'persistence' and a 'Persistence' 
>>> installed, as long as they're in different directories.  See PEP 235 
>>> ( http://www.python.org/peps/pep-0235.html ) for more details.
>>
>> Yeah, but that breaks any time I setup.py install and forget to 
>> specify the alternative path :)  I was trying to avoid that.
>
> If it's PEAK you're installing on the alternate path, you can edit its 
> setup.cfg, adding:
>
> [install]
> prefix = whatever
>
> And then you won't need to pass the alternative path on the command 
> line.  Or you can create a setup.cfg for ZODB to do the same.  (If you 
> use something other than --prefix, just change the option name used 
> accordingly.)

Perhaps you should consider changing the install mode to use a PEAK 
"root folder" with a PEAK.pth so all of the packages become top level?  
It would make PEAK easier to uninstall or upgrade, if nothing else.  At 
current count, PEAK drops *6* things into your site-packages folder, 
only one of which is named peak.

-bob