[Distutils] How to define a platform?
Phillip J. Eby
pje at telecommunity.com
Tue Dec 21 08:06:40 CET 2004
One of the trickier things about defining our "plugin" format is the
definition of a platform. That is, how can we tell from metadata whether a
given plugin is executable on the current platform?
If we use 'distutils.util.get_platform()' and do simple string comparison,
I believe this will result in both false positives and false negatives, due
to e.g. the absence of processor info for Windows platforms, and the
presence of processor info or OS version info for other platforms. For
example, a 'linux-i386' module might work with a 'linux-i686' platform, yet
not be accepted by a simple string comparison.
Of course, if that metadata is encoded only in the plugin filename, then
it's relatively simple to create copies with different filenames, one per
applicable platform string. Or, perhaps there could be some type of
configuration file that simply lists what platform strings (besides the one
the machine itself generates) are acceptable on the machine.
But, false positives seem harder to fix. For example, "win32" is used for
both 32-bit and 64-bit Windows targets. I'm unsure whether any of the
other targets have similar issues.
Does anybody have any ideas?
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