[Pythonmac-SIG] Using py2app on 10.5 to build apps that run on 10.4?

[Russell E. Owen]

I'd love to upgrade to Leopard, but I maintain a python application that 
needs to run on 10.4 (and preferably 10.3.9).

So...is it now practical to build 10.4-compatible applications using 
py2app on a 10.5 computer? What is involved? (For instance I remember 
reading that the built-in python needed some fixes for distutils to be 
able to make fat binaries, but I have no idea what the fixes are or how 
to install them).

Does it help (or hurt?) if I use a 3rd party installation of Python, 
instead of the built in python?

-- Russell