[matplotlib-devel] backend_macosx framework check fails with 64bit Python

[Derek Homeier]

Hi again, cc'ing the matplotlib list this time,


and will be for python3 as well.

for the latter: when building matplotlib against a fink-installed python compiled in 64bit mode I found the check for a framework-installed Python (rev 8365) fails, and matplotlib fails to load, because the MacOS module is not available in 64bit. Actually Apple seems to have made it still available in their system Python, but it's likely to be a general problem on 64bit OS X installations,

updated patch?  I haven't used matplotlib in a long time.

I believe I have fixed the patch file issue that came from an accidental edit of the patch file (off by 1 space character). For the issues below, can you give me some examples that show the behavior that is broken now, but fixed into your

thanks, the fixed patch in unstable compiles and runs now.

actually only seems to exist for x86_64 on Snow Leopard.

"import MacOS" worked with /usr/bin/python even on Snow Leopard.


to be removed altogether in python3.x. I'll keep you posted.

Sorry for the late reply; I found that the issue that my extra patch addressed It is in fact not directly related to python being built as a framework, but the "import MacOS" used to check for the framework version fails, since the MacOS module is not available in 64bit. Or so the python docs state, but Apple seems to have retrofitted it somehow into their system python, so my test for So the test for MacOS.WMAvailable() that my patch removed can obviously stay there for 32bit installations, and it would probably be better to just catch the import error on 64bit systems. I'll try to work something out along those lines, and probably send it upstream to the matplotlib folks as well, since this should be a general problem on 64bit systems; and also the MacOS module is going

I've put the import inside the check now and have it print the warning in both cases (assuming Python is not a framework installation if it lacks the MacOS module). I don't know if there might be an alternative way to check for the framework property for later, and I just picked an error to raise that seemed sensible - feel free to change

that as necessary.

Cheers,
                                                        Derek

MacOS-64bit.patch
Description: Binary data

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