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#!/usr/bin/env python3
"""A shim executable to put dependencies on sys.path"""
import argparse
import os.path
import runpy
import sys
# an exe-zipapp will have a __file__ of shim.exe/__main__.py
EXE = __file__ if os.path.isfile(__file__) else os.path.dirname(__file__)
EXE = os.path.realpath(EXE)
HERE = os.path.dirname(EXE)
WHEELDIR = os.path.join(HERE, 'wheels')
SITE_DIRS = frozenset(('dist-packages', 'site-packages'))
def main() -> int:
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument('-m')
args, rest = parser.parse_known_args()
if args.m:
# try and remove site-packages from sys.path so our packages win
sys.path[:] = [
p for p in sys.path
if os.path.split(p)[1] not in SITE_DIRS
]
for wheel in sorted(os.listdir(WHEELDIR)):
sys.path.append(os.path.join(WHEELDIR, wheel))
if args.m == 'pre_commit' or args.m.startswith('pre_commit.'):
sys.executable = EXE
sys.argv[1:] = rest
runpy.run_module(args.m, run_name='__main__', alter_sys=True)
return 0
else:
cmd = (sys.executable, *sys.argv[1:])
if sys.platform == 'win32': # https://bugs.python.org/issue19124
import subprocess
if sys.version_info < (3, 7): # https://bugs.python.org/issue25942
return subprocess.Popen(cmd).wait()
else:
return subprocess.call(cmd)
else:
os.execvp(cmd[0], cmd)
if __name__ == '__main__':
exit(main())
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