How to force py2app to run the application in 32-bit mode

Question

I am trying to create an application package with py2app on Mac OS X 10.6. The application uses some libraries that are compiled for 32-bit only, so when the application starts, there is an incorrect 64-bit ImportError architecture. How can I tell py2app to make the application run in 32-bit mode?

Answer 1

One way is to use only 32-bit Python, such as the 32-bit versions downloaded from python.org, with py2app. Another is to install LSArchitecturePriority on i386 and possibly ppc in the generated Info.plist application package. See here for more information.

Answer 2

If you want to work only in 32-bit mode, you do not need a 64-bit architecture. Thus, you can simply remove all architectures without i386 from your resulting application package using the ditto utility.

Example:

 ditto --rsrc --arch i386 YourApplication.app YourApplicationStripped.app 

Your application suite will be smaller and run as a 32-bit application, even on Intel 64-bit systems.

Manually: http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/man1/ditto.1.html

Or just run in terminal: man ditto

Answer 3

After severe pain and trying to get wx-work, I managed to get it to work using this method, I also included the versions that I installed. It was the only one that worked for me, I hope this helps other people.

 py2applet --arch=i386 -i (includes here) --make-setup (pythonfiles, icon) 

Mine looks a bit like this

 py2applet --arch=i386 -i wx, platform --make-setup print.py print.icns convert.py 

I installed python2.7 using
wxPython2.8-OSX-unicode-py2.7
Setuptools-0.6c11-py2.7.egg
and then

 sudo easy_install-2.7 py2app 

This installed version 0.6.4 py2applet

Answer 4

Well, seeing me working in the same office on Webjorn, this may be the best place to post an answer, so we'll find it again. Given the py2app parameter dictionary:

 options = {} ... options['plist'] = { "LSArchitecturePriority": [ "i386" ] } ... setup(options={'py2app':options}) 

This creates an array of a single string value for the LSArchitecturePriority key.

Answer 5

You need to get python to work in 32-bit mode.