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pavement.py
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pavement.py
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import os
import re
import sys
import shutil
import subprocess
import venv
import string
from tempfile import TemporaryDirectory
from paver.easy import info, task, path as Path
def remove_all(paths):
for path in paths:
path.rmtree() if path.isdir() else path.remove()
@task
def update_vendored():
update_pkg_resources()
update_setuptools()
def rewrite_packaging(pkg_files, new_root):
"""
Rewrite imports in packaging to redirect to vendored copies.
"""
for file in pkg_files.glob('*.py'):
text = file.text()
text = re.sub(r' (pyparsing)', rf' {new_root}.\1', text)
text = text.replace(
'from six.moves.urllib import parse',
'from urllib import parse',
)
file.write_text(text)
def clean(vendor):
"""
Remove all files out of the vendor directory except the meta
data (as pip uninstall doesn't support -t).
"""
remove_all(
path
for path in vendor.glob('*')
if path.basename() != 'vendored.txt'
)
def install(vendor):
clean(vendor)
install_args = [
sys.executable,
'-m', 'pip',
'install',
'-r', str(vendor / 'vendored.txt'),
'-t', str(vendor),
]
subprocess.check_call(install_args)
remove_all(vendor.glob('*.dist-info'))
remove_all(vendor.glob('*.egg-info'))
remove_all(vendor.glob('six.py'))
(vendor / '__init__.py').write_text('')
def update_pkg_resources():
vendor = Path('pkg_resources/_vendor')
install(vendor)
rewrite_packaging(vendor / 'packaging', 'pkg_resources.extern')
def update_setuptools():
vendor = Path('setuptools/_vendor')
install(vendor)
install_validate_pyproject(vendor)
rewrite_packaging(vendor / 'packaging', 'setuptools.extern')
def install_validate_pyproject(vendor):
"""``validate-pyproject`` can be vendorized to remove all dependencies"""
req = next(
(x for x in (vendor / "vendored.txt").lines() if 'validate-pyproject' in x),
"validate-pyproject[all]"
)
pkg, _, _ = req.strip(string.whitespace + "#").partition("#")
pkg = pkg.strip()
opts = {}
if sys.version_info[:2] >= (3, 10):
opts["ignore_cleanup_errors"] = True
with TemporaryDirectory(**opts) as tmp:
venv.create(tmp, with_pip=True)
path = os.pathsep.join(Path(tmp).glob("*"))
venv_python = shutil.which("python", path=path)
info(f"Temporarily installing {pkg!r}...")
subprocess.check_call([venv_python, "-m", "pip", "install", pkg])
cmd = [
venv_python,
"-m",
"validate_pyproject.vendoring",
"--output-dir",
str(vendor / "_validate_pyproject"),
"--enable-plugins",
"setuptools",
"distutils",
"--very-verbose"
]
subprocess.check_output(cmd)
info(f"{pkg!r} vendorized")