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Ran 10 Jul 2026 01:57AM UTC

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Committed 10 Jul 2026 01:26AM UTC coverage: 52.872% (-0.005%) from 52.877%

Job # 29062390045.11

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push

github

Committed by

web-flow

Commit Message

Fix: Defer `validate_resolved_files` in `hydrate_sources` to support … (#23465)

Fixes #23015

### Problem
`SingleSourceField`s that rely on target generation/codegen currently
fail to hydrate. This happens because `validate_resolved_files` is
called immediately after glob expansion, *before* the actual code
generation (`generate_sources`) takes place. Since `SingleSourceField`
strictly expects exactly 1 file, this premature validation fails because
the generated file doesn't exist yet.

### Solution
Refactored the execution order inside `hydrate_sources`
(`src/python/pants/engine/internals/graph.py`) to defer file validation:
- If codegen is not in use, the validation happens normally on the
initial `snapshot` as before.
- If codegen is enabled, the validation is skipped initially and only
called on `generated_sources.snapshot.files` after the
`generate_sources` await completes.

Also added the corresponding release note to `docs/notes/2.34.x.md`.

---------

Signed-off-by: Thiago Riemma Carbonera <thiagoriemma@gmail.com>

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