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Fix entry points in the pre-built distribution that binaries use (#1505)
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Original file line number | Diff line number | Diff line change |
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from __future__ import annotations | ||
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import sys | ||
import sysconfig | ||
from io import BytesIO | ||
from pathlib import Path | ||
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def main(): | ||
interpreter = Path(sys.executable).resolve() | ||
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# https://github.com/indygreg/python-build-standalone/blob/20240415/cpython-unix/build-cpython.sh#L812-L813 | ||
portable_shebang = b'#!/bin/sh\n"exec" "$(dirname $0)/%s" "$0" "$@"\n' % interpreter.name.encode() | ||
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scripts_dir = Path(sysconfig.get_path('scripts')) | ||
for script in scripts_dir.iterdir(): | ||
if not script.is_file(): | ||
continue | ||
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with script.open('rb') as f: | ||
data = BytesIO() | ||
for line in f: | ||
# Ignore leading blank lines | ||
if not line.strip(): | ||
continue | ||
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# Ignore binaries | ||
if not line.startswith(b'#'): | ||
break | ||
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if line.startswith(b'#!%s' % interpreter.parent): | ||
executable = Path(line[2:].rstrip().decode()).resolve() | ||
data.write(portable_shebang if executable == interpreter else line) | ||
else: | ||
data.write(line) | ||
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data.write(f.read()) | ||
break | ||
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contents = data.getvalue() | ||
if not contents: | ||
continue | ||
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with script.open('wb') as f: | ||
f.write(contents) | ||
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if __name__ == '__main__': | ||
main() |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,92 @@ | ||
from __future__ import annotations | ||
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import sys | ||
import sysconfig | ||
from contextlib import closing | ||
from importlib.metadata import entry_points | ||
from io import BytesIO | ||
from os.path import relpath | ||
from pathlib import Path | ||
from tempfile import TemporaryDirectory | ||
from urllib.request import urlopen | ||
from zipfile import ZIP_DEFLATED, ZipFile, ZipInfo | ||
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LAUNCHERS_URL = 'https://raw.githubusercontent.com/astral-sh/uv/main/crates/uv-trampoline/trampolines' | ||
SCRIPT_TEMPLATE = """\ | ||
#!{executable} | ||
# -*- coding: utf-8 -*- | ||
import re | ||
import sys | ||
from {module} import {import_name} | ||
if __name__ == "__main__": | ||
sys.argv[0] = re.sub(r"(-script\\.pyw|\\.exe)?$", "", sys.argv[0]) | ||
sys.exit({function}()) | ||
""" | ||
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def select_entry_points(ep, group): | ||
return ep.select(group=group) if sys.version_info[:2] >= (3, 10) else ep.get(group, []) | ||
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def fetch_launcher(launcher_name): | ||
with urlopen(f'{LAUNCHERS_URL}/{launcher_name}') as f: # noqa: S310 | ||
return f.read() | ||
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def main(): | ||
interpreters_dir = Path(sys.executable).parent | ||
scripts_dir = Path(sysconfig.get_path('scripts')) | ||
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ep = entry_points() | ||
for group, interpreter_name, launcher_name in ( | ||
('console_scripts', 'python.exe', 'uv-trampoline-x86_64-console.exe'), | ||
('gui_scripts', 'pythonw.exe', 'uv-trampoline-x86_64-gui.exe'), | ||
): | ||
interpreter = interpreters_dir / interpreter_name | ||
relative_interpreter_path = relpath(interpreter, scripts_dir) | ||
launcher_data = fetch_launcher(launcher_name) | ||
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for script in select_entry_points(ep, group): | ||
# https://github.com/astral-sh/uv/tree/main/crates/uv-trampoline#how-do-you-use-it | ||
with closing(BytesIO()) as buf: | ||
# Launcher | ||
buf.write(launcher_data) | ||
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# Zipped script | ||
with TemporaryDirectory() as td: | ||
zip_path = Path(td) / 'script.zip' | ||
with ZipFile(zip_path, 'w') as zf: | ||
# Ensure reproducibility | ||
zip_info = ZipInfo('__main__.py', (2020, 2, 2, 0, 0, 0)) | ||
zip_info.external_attr = (0o644 & 0xFFFF) << 16 | ||
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module, _, attrs = script.value.partition(':') | ||
contents = SCRIPT_TEMPLATE.format( | ||
executable=relative_interpreter_path, | ||
module=module, | ||
import_name=attrs.split('.')[0], | ||
function=attrs, | ||
) | ||
zf.writestr(zip_info, contents, compress_type=ZIP_DEFLATED) | ||
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buf.write(zip_path.read_bytes()) | ||
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# Interpreter path | ||
interpreter_path = relative_interpreter_path.encode('utf-8') | ||
buf.write(interpreter_path) | ||
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# Interpreter path length | ||
interpreter_path_length = len(interpreter_path).to_bytes(4, 'little') | ||
buf.write(interpreter_path_length) | ||
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# Magic number | ||
buf.write(b'UVUV') | ||
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script_data = buf.getvalue() | ||
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script_path = scripts_dir / f'{script.name}.exe' | ||
script_path.write_bytes(script_data) | ||
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if __name__ == '__main__': | ||
main() |
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