For closure: The solution was to make a Command class + implement
finalize_options to fixup the paths in distribution.data_files.
Source:
# https://gist.github.com/stuaxo/c76a042cb7aa6e77285b
"""
Install a file into the root of sitepackages on windows as well as
linux.
Under normal operation on win32 path_to_site_packages
gets changed to '' which installs inside the .egg instead.
"""
import os
from distutils import sysconfig
from distutils.command.install_data import install_data
from setuptools import setup
here = os.path.normpath(os.path.abspath(os.path.dirname(__file__)))
site_packages_path = sysconfig.get_python_lib()
site_packages_files = ['TEST_FILE.TXT']
class _install_data(install_data):
def finalize_options(self):
"""
On win32 the files here are changed to '' which
ends up inside the .egg, change this back to the
absolute path.
"""
install_data.finalize_options(self)
global site_packages_files
for i, f in enumerate(list(self.distribution.data_files)):
if not isinstance(f, basestring):
folder, files = f
if files == site_packages_files:
# Replace with absolute path version
self.distribution.data_files[i] =
(site_packages_path, files)
setup(
cmdclass={'install_data': _install_data},
name='test_install',
version='0.0.1',
description='',
long_description='',
url='https://example.com',
author='Stuart Axon',
author_email='[email protected]',
license='PD',
classifiers=[],
keywords='',
packages=[],
install_requires=[],
data_files=[
(site_packages_path, site_packages_files),
],
)
On Tue, 10 Mar, 2015 at 11:29 PM, Stuart Axon <[email protected]> wrote:
I had more of a dig into this, with a minimal setup.py:
https://gist.github.com/stuaxo/c76a042cb7aa6e77285b
setup calls install_data
On win32 setup.py calls install_data which copies the file into the
egg - even though I have given the absolute path to sitepackages
C:\> python setup.py install
....
running install_data
creating build\bdist.win32\egg
copying TEST_FILE.TXT -> build\bdist.win32\egg\
....
On Linux the file is copied to the right path:
$ python setup.py install
.....
installing package data to build/bdist.linux-x86_64/egg
running install_data
copying TEST_FILE.TXT ->
/mnt/data/home/stu/.virtualenvs/tmpv/lib/python2.7/site-packages
....
*something* is normalising my absolute path to site packages into
just '' - it's possible to see by looking at self.data_files in the
'run' function in:
distutils/command/install_data.py
- on windows it the first part has been changed to '' unlike on
linux where it's the absolute path I set... still not sure where it's
happening though.
*This all took a while, as rebuilt VM and verified on 2.7.8 and
2.7.9..
S++
On Monday, March 9, 2015 12:17 AM, Stuart Axon <[email protected]>
wrote:
> I had a further look - and on windows the file ends up inside the
.egg file, on
linux it ends up inside the site packages as intended.
At a guess it seems like there might be a bug in the path handling
on windows.
.. I wonder if it's something like this
http://stackoverflow.com/questions/4579908/cross-platform-splitting-of-path-in-python
which seems an easy way to get an off-by-one error in a path ?
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