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"""Install flit_core without using any other tools.
Normally, you would install flit_core with pip like any other Python package.
This script is meant to help with 'bootstrapping' other packaging
systems, where you may need flit_core to build other packaging tools.
Use 'python -m flit_core.wheel' to make a wheel, then:
python bootstrap_install.py flit_core-3.6.0-py3-none-any.whl
To install for something other than the Python running the script, pass a
site-packages or equivalent directory with the --installdir option.
"""
import argparse
import sys
import sysconfig
from pathlib import Path
from zipfile import ZipFile
def extract_wheel(whl_path, dest):
print("Installing to", dest)
with ZipFile(whl_path) as zf:
zf.extractall(dest)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
'wheel',
type=Path,
help=f'flit_core wheel to install (.whl file)',
)
purelib = Path(sysconfig.get_path('purelib')).resolve()
parser.add_argument(
'--installdir',
'-i',
type=Path,
default=purelib,
help=f'installdir directory (defaults to {purelib})',
)
parser.add_argument(
'--install-root',
type=Path,
default=None,
help='if given, installdir is considered to be under this'
)
args = parser.parse_args()
if not args.wheel.name.startswith('flit_core-'):
sys.exit("Use this script only for flit_core wheels")
if args.install_root:
installdir = args.install_root / args.installdir.relative_to("/")
else:
installdir = args.installdir
installdir.mkdir(parents=True, exist_ok=True)
extract_wheel(args.wheel, installdir)
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