> Hey there,
> I'm using python 2.7/setuptools 3.6 to build an egg of my code (checked into
> perforce) using my setup.py. This egg gets installed into a virtualenv.
> On osx/darwin this works fine.
> On windows, the bdist creates scripts and data whose permissions are
> read-only (attrib+r), and they cannot overwrite themselves in a subsequent
> build of that egg. Similarly, >re-installing a new egg using virtualenv fails
> because the installed egg's scripts and data are not writable.
> I thought it might be that when checked out from perforce, the permissions
> stayed read-only during the build of the egg, so I set all the files in my
> module to be read-write before building. Even when the original source files'
> permissions are all set to read-write, the generated bdist egg script/data
> content end up becoming read-only.
Yes, the default copy_file implementation from distutils keeps attributes on
copy (preserve_mode parameter is non zero). In our setup.py we monkey patch
the copy_file to get around this situation
> Couple of questions.
> 1. Since it works fine on osx, it seems like a bug in the windows
> implementation of setuptools. Is this known behavior, is there a reason for
> setting this on scripts/data on windows?
This is not a setuptools problem, but a (probably wrong) choice of defaults in
distutils
> 2. Is there a hook in the bdist egg build process I can use to set the
> attributes of the files correctly when the bdist egg is made? How/where
> should I define this in my setup.py?
Kind regards,
In your setup.py, use a monkey patch like the one below:
#monkey-patch the copy_file function beacause it has the wrong default value
for preserve_mode
from distutils.file_util import copy_file as old_copy_file
def non_preserve_copy_file(src, dst, preserve_mode=0, preserve_times=1,
update=0,
link=None, verbose=1, dry_run=0):
return old_copy_file(src, dst, preserve_mode=0,
preserve_times=preserve_times, update=update, link=link, verbose=verbose,
dry_run=dry_run)
distutils.file_util.__dict__['copy_file'] = non_preserve_copy_file
#end monkey patching
Regards,
David.
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