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zeekay
1b367e2b62
The tree was a debranded snapshot of upstream taken around 2026-02-20, and upstream has moved about five months since. This replaces it with upstream master, mechanically re-derived: bin/debrand does the rename, and the pipeline and squashed migrations are restored from the shipped tree. Not a merge. The previous import replaced the tree wholesale in a single commit, so there is no shared content history to merge against. Reproducing the rename on the new tree is what actually converges. What survives: .hanzo/workflows, the Dockerfiles and bin/docker* entrypoints, compose files, LLM.md, and insights/migrations. The squashed initial migration is load-bearing — the live database records it by name, so upstream's ~918 individual migrations cannot come back. Nine products are dropped as unreferenced. Twenty-one more that we do not run are kept anyway because the core app still imports them; unpicking those is a refactor and does not belong in a rebase. This base does not build yet, and the reasons are not in the rename: upstream now wants Python 3.13.13 against our 3.12.12 and Django 5.2 against our 4.2, and the dependency manifests still name upstream packages that we republish under our own names. Those are decisions, not renames.
80 lines
3.3 KiB
Python
80 lines
3.3 KiB
Python
"""libcst-based source rewriting for product isolation moves.
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Kept separate from isolate.py's regex rewriting because the two solve different
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problems. Fully qualified absolute paths (and the string references the regex
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deliberately also rewrites, like ``@patch`` mock paths) are lexically
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unambiguous, so a guarded literal substitution is the right tool. *Relative*
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imports are not: ``from ..x import y`` only resolves once you know the importing
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module's package, and the depth can be arbitrary — exactly the case a line regex
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has to punt on. This resolves them with a real parse instead.
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Mirrors the relative-import resolution proven in the product-model-migration
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skill's ``import_rewriter.py`` rather than reinventing it.
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"""
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from __future__ import annotations
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import libcst as cst
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def dotted_name(node: cst.BaseExpression | None) -> str | None:
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"""Dotted module name from a ``Name``/``Attribute`` expression, else None."""
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if node is None:
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return None
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parts: list[str] = []
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current: cst.BaseExpression | None = node
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while isinstance(current, cst.Attribute):
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parts.append(current.attr.value)
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current = current.value
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if not isinstance(current, cst.Name):
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return None
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parts.append(current.value)
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return ".".join(reversed(parts))
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def resolve_relative(package: str, level: int, module: str | None) -> str | None:
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"""Absolute dotted path for a relative import inside ``package``.
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``package`` is the importing file's own package (the regex tool's contract):
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level 1 (``from .x``) resolves against ``package`` itself, and each extra dot
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climbs one parent. Returns None if the climb runs past the package root.
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"""
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parts = package.split(".")
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climb = level - 1
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if climb > len(parts):
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return None
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base = parts[: len(parts) - climb] if climb else list(parts)
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if module:
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base += module.split(".")
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return ".".join(base) or None
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class _RelativeImportAbsolutizer(cst.CSTTransformer):
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def __init__(self, package: str) -> None:
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self.package = package
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self.warnings: list[str] = []
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def leave_ImportFrom(self, _original_node: cst.ImportFrom, updated_node: cst.ImportFrom) -> cst.ImportFrom:
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if not updated_node.relative:
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return updated_node
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level = len(updated_node.relative)
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absolute = resolve_relative(self.package, level, dotted_name(updated_node.module))
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if absolute is None:
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self.warnings.append(f"could not resolve a level-{level} relative import against {self.package}")
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return updated_node
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return updated_node.with_changes(relative=[], module=cst.parse_expression(absolute))
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def absolutize_relative_imports(text: str, package: str) -> tuple[str, list[str]]:
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"""Rewrite every relative import in ``text`` to absolute, resolved against ``package``.
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Any depth of leading dots is handled (unlike a line regex), formatting is
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preserved, and a file libcst can't parse is returned unchanged with a warning.
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"""
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try:
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module = cst.parse_module(text)
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except cst.ParserSyntaxError as exc:
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return text, [f"libcst could not parse the module, relative imports left untouched ({exc})"]
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transformer = _RelativeImportAbsolutizer(package)
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return module.visit(transformer).code, transformer.warnings
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