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community.general/packaging/sdist/check-link-behavior.py
Matt Clay 19c0511f57 Add link check to make sdist.
This will cause `make sdist` to fail on platforms which create
hard links of symbolic links as regular files, such as MacOS (Darwin).

This prevents accidental creation of an sdist tarball without
the necessary symbolic links.
2018-10-11 18:34:06 -07:00

51 lines
1.3 KiB
Python
Executable file

#!/usr/bin/env python
"""Checks for link behavior required for sdist to retain symlinks."""
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
import platform
import shutil
import sys
import tempfile
def main():
"""Main program entry point."""
temp_dir = tempfile.mkdtemp()
target_path = os.path.join(temp_dir, 'file.txt')
symlink_path = os.path.join(temp_dir, 'symlink.txt')
hardlink_path = os.path.join(temp_dir, 'hardlink.txt')
try:
with open(target_path, 'w'):
pass
os.symlink(target_path, symlink_path)
os.link(symlink_path, hardlink_path)
if not os.path.islink(symlink_path):
abort('Symbolic link not created.')
if not os.path.islink(hardlink_path):
# known issue on MacOS (Darwin)
abort('Hard link of symbolic link created as a regular file.')
finally:
shutil.rmtree(temp_dir)
def abort(reason):
"""
:type reason: str
"""
sys.exit('ERROR: %s\n'
'This will prevent symbolic links from being preserved in the resulting tarball.\n'
'Aborting creation of sdist on platform: %s'
% (reason, platform.system()))
if __name__ == '__main__':
main()