[Pythonmac-SIG] py2app not happy with zope.interface

[Russell E. Owen]

In article <793A2D4F-E7F2-4285-9D8E-6C75882511F7 at mac.com>,
 Ronald Oussoren <ronaldoussoren at mac.com> wrote:

> On 21 Jul, 2010, at 22:24, Russell E. Owen wrote:
> 
> > A py2app-built application stopped building properly recently after 
> > various upgrades. It would fail immediately on startup complaining that 
> > it could not find zope.interface. The app uses Twisted, which is why it 
> > needs zope.interface.
> > 
> > I tried adding "zope" or "zope.interface" to "packages", but neither 
> > worked (in particular, the latter resulted in a traceback during the 
> > build).
> > 
> > What did work was to add a blank __init__.py file to the "zope" 
> > directory in site-packages. But I don't know why that was useful. (I 
> > realize it makes zope into a package, but I don't know why that was 
> > necessary because zope.interface can already be imported from the 
> > command line -- presumably due to a pth file).
> 
> How did you install zope.interface? Basically which easy_install or pip 
> command-line did you use to install?

I used "pip install zope.interface".

> I guess the nspkg.pth ensures that zope.interface can be imported without an 
> __init__ file and py2app doesn't parse those files (or doesn't understand how 
> to do so). If I can reproduce the problem I can  (and will) fix it.

That would be much appreciated (though the workaround is clearly not too 
bad).

Regards,

-- Russell