"Fred L. Drake, Jr." wrote:
>
> Moore, Paul writes:
> > On point 3a, sys.extinstallpath should be set for all platforms, but I have
> > to admit that I don't know what to do for non-Windows platforms. The best I
> > can suggest is that we do something like
> >
> > if os.sep == '/':
> > sys.extinstallpath = os.path.join(sys.prefix, "lib", "python" +
> > sys.version[:3], "site-packages")
> > else:
> > sys.extinstallpath = os.path.join(sys.prefix, "lib", "site-packages")
>
> There's one aspect that doesn't appear to have been addressed for
> Unix: there are two reasonable values for extinstallpath. In
> multi-architecture installations, where the Python portions of the
> library are shared among architectures, there are two site-packages
> directories:
>
> $prefix/lib/pythonX.Y/site-packages/
>
> and
>
> $exec_prefix/lib/pythonX.Y/site-packages/
>
> When $prefix and $exec_prefix are the same, this isn't an issue, but
> for this is a problem for multi-platform installations.
I don't think this is an issue since distutils already knows
that extension package live in .../site-package on Unix.
The Windows install and unix_home are the only ones which copy
the files into non-standard dirs (Unix seems to be the only
target which supports multi-platform installs out-of-the-box):
[taken from distutils.commands.install]
"""
INSTALL_SCHEMES = {
'unix_prefix': {
'purelib': '$base/lib/python$py_version_short/site-packages',
'platlib': '$platbase/lib/python$py_version_short/site-packages',
'headers': '$base/include/python$py_version_short/$dist_name',
'scripts': '$base/bin',
'data' : '$base',
},
'unix_home': {
'purelib': '$base/lib/python',
'platlib': '$base/lib/python',
'headers': '$base/include/python/$dist_name',
'scripts': '$base/bin',
'data' : '$base',
},
'nt': {
'purelib': '$base',
'platlib': '$base',
'headers': '$base/Include/$dist_name',
'scripts': '$base/Scripts',
'data' : '$base',
},
'mac': {
'purelib': '$base/Lib/site-packages',
'platlib': '$base/Lib/site-packages',
'headers': '$base/Include/$dist_name',
'scripts': '$base/Scripts',
'data' : '$base',
}
}
"""
Paul, note that your patches don't even touch install.py -- are
your sure that the patch to sysconfig.py suffices to have distutils
install the extensions into site-packages on Windows ?
(I believe that install.py would have to be told about
sys.extinstallpath too and that it should fallback to the
defaults given in the install schemes if it is not set.)
--
Marc-Andre Lemburg
CEO eGenix.com Software GmbH
______________________________________________________________________
Consulting & Company: http://www.egenix.com/
Python Software: http://www.lemburg.com/python/
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