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https://github.com/kevinveenbirkenbach/computer-playbook.git
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kevinveenbirkenbachandClaude Opus 5
1735108188
sys.modules is consulted before sys.meta_path, so everything site pulls in from .pth files -- setuptools' _distutils_hack and 24 editable-install finders on a dev host -- resolved straight out of the cache and never reached the Blocker. An overlay with a smuggled 'import _distutils_hack' passed the guard before this change and fails after it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
"""Run the .env generator with every non-stdlib, non-repo import blocked.
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Executed as a subprocess, never imported. Argv is ``<repo-root> <out-path>``.
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A blocked import propagates so the traceback names the offending chain.
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``sys.modules`` is consulted before ``sys.meta_path``, and ``site`` preloads
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whatever the interpreter's ``.pth`` files pull in (setuptools' ``_distutils_hack``,
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an editable-install finder). Those entries are dropped first, otherwise a
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third-party import would resolve straight out of the cache, unblocked.
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"""
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from __future__ import annotations
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import sys
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from pathlib import Path
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REPO = Path(sys.argv[1]).resolve()
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OUT = Path(sys.argv[2])
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sys.path.insert(0, str(REPO))
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REPO_TOP = frozenset(
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{"cli", "utils", "plugins", "filter_plugins", "lookup_plugins", "module_utils"}
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)
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STDLIB = frozenset(sys.stdlib_module_names)
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class Blocker:
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def find_spec(self, fullname, path=None, target=None):
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top = fullname.split(".")[0]
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if top in STDLIB or top in REPO_TOP:
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return
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raise ModuleNotFoundError(f"No module named {fullname!r}", name=fullname)
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for _name in list(sys.modules):
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_top = _name.split(".")[0]
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if _top not in STDLIB and _top not in REPO_TOP and _name != "__main__":
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del sys.modules[_name]
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sys.meta_path.insert(0, Blocker())
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from cli.meta.env.__main__ import ( # noqa: E402
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build_env,
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parse_static_env_with_comments,
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write_dotenv,
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)
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static, comments = parse_static_env_with_comments(REPO / "default.env")
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eb = build_env(static, repo_root=REPO, comments=comments)
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write_dotenv(eb, OUT)
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print(len(eb.values))
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