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4662f282cf
now that web templates are found via pkg_resources, then the windows build should in fact _use_ pkg_resources, rather than exclude it from the build to prevent nevow exploding upon import due to the zip provider exception, so that the pkgreshook can do install location based lookups
47 lines
1.8 KiB
Python
47 lines
1.8 KiB
Python
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def install():
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"""
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This installs a hook into setuptools' pkg_resources infrastructure, so that resource
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files can be found in files relative to the runnin executable, in addition to the
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usual egg and source lookup mechanisms. This overrides the ZipProvider, since that
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is the lookup mechanism triggered within pkg_resources when running code out of a
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py2exe or py2app build's library.zip.
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"""
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import os, sys
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import pkg_resources, zipimport
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platform_libdirs = {
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'darwin': '../Resources/pkg_resources',
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}
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exedir = os.path.dirname(sys.executable)
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libdir = platform_libdirs.get(sys.platform, 'pkg_resources')
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class Provider(pkg_resources.ZipProvider):
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def __init__(self, module):
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self._module_name = module.__name__
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pkg_resources.ZipProvider.__init__(self, module)
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def get_resource_filename(self, manager, resource_name):
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#print 'get_resource_filename(%s, %s)' % (manager, resource_name)
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path = [exedir, libdir] + self._module_name.split('.') + [resource_name]
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localfile = os.path.join(*path)
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#print ' checking(%s)' % (localfile,)
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if os.path.exists(localfile):
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#print 'found locally'
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return localfile
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else:
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try:
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ret = pkg_resources.ZipProvider.get_resource_filename(self, manager, resource_name)
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#print 'returning %s' % (ret,)
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return ret
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except NotImplementedError:
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#print 'get_resource_filename(%s,%s): not found' % (self._module_name, resource_name)
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#import traceback
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#traceback.print_exc()
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return ''
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pkg_resources.register_loader_type(zipimport.zipimporter, Provider)
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