[Pythonmac-SIG] py2app zlib error

[Ronald Oussoren]

On 16 Sep, 2011, at 8:51, Neacsa Bogdan Valentin wrote:

> Hello,
> 
> So I've created an app using py2app. It has a rather large number of dependencies but I've managed to make it work on my PC (Mac OS X 10.5.8). However now I'm testing it on a different machine (still a Mac OS 10.5.8) and it won't work.
> 
> It crashes right from the start with a : 
> 
>    zipimport.ZipImportError: can't decompress data; zlib not available
> 
> I've checked and zlib.so is in lib-dynload. What could cause this?

What version of python and py2app do you use?

To debug you can add a print statement to yourapp.app/Contents/Resources/__boot__.py. In particular, add these two lines to the top of that file:

    import sys
    print sys.path

If all is well the correct lib-dynload should be on sys.path before the zipfile containing the rest of the application.  One thing you could also try: edit py2app/build_app.py and look for 'compressed = True', change that to 'compressed = False'. This ensures that the zipfile with the application files won't be compressed. That's not guaranteed to give a useful result though, there may be other problems with the application bundle.

Ronald

> 
> Regards,
> Bogdan
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