98 lines
3.2 KiB
Markdown
98 lines
3.2 KiB
Markdown
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---
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model: claude-opus-4-7[1m]
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service: claude
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session: subints-spawner-phase-b1-impl
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timestamp: 2026-04-17T12:44:37Z
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git_ref: 5cd6df5
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scope: code
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substantive: true
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raw_file: 20260417T124437Z_5cd6df5_prompt_io.raw.md
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---
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## Prompt
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Continuing the Phase B work from the design sessions
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logged in `20260417T034918Z_9703210_prompt_io.md` and
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the Phase A impl in `20260417T035800Z_61a73ba_...`.
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User direction at this step:
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- "ok now let's continue with the subints part of the
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plan ya?" → kick off Phase B.
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- After I proposed a 4-sub-phase breakdown (B.1
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scaffolding, B.2 min-viable spawn, B.3 lifecycle,
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B.4 test enablement), user: "ok can we continue
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with B" → approving the phasing and design
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defaults (thread-per-subint, UDS default,
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code-string bootstrap via `interp.exec()`).
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- User switched the worktree to
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`subint_spawner_backend` (instead of opening a
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fresh worktree as I'd proposed): "i already
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switched branches in the wkt, you should work off
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`subint_spawner_backend` now".
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Scope of this turn: **B.1 scaffolding only** —
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wire the `'subint'` name through the spawn-method
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registry + harness, add a feature-detected stub
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module, bump pyproject. No actual spawn flow.
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## Response summary
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Produced the Phase B.1 scaffolding patch, landed as
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commit `5cd6df58` (subject: `Add `'subint'` spawn
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backend scaffold (#379)`). Four files changed,
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+124 / -2 lines.
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Key pieces (all generated by claude, reviewed by
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human before commit):
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- `tractor/spawn/_subint.py` — **new**; feature-
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detects `concurrent.interpreters`; `subint_proc()`
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stub raises `RuntimeError` on py<3.14 or
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`NotImplementedError` with issue-#379 URL on
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py≥3.14. Signature mirrors `trio_proc`/`mp_proc`
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so B.2 can drop the impl in without touching
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`_methods`.
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- `tractor/spawn/_spawn.py` — adds `'subint'` to
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`SpawnMethodKey`, grows a `case 'subint'` arm in
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`try_set_start_method()` with feature-gate, re-
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imports `sys` for the gate-error msg, adds late
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`from ._subint import subint_proc` import and
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`_methods` entry.
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- `tractor/_testing/pytest.py` — converts the
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gate-error into `pytest.UsageError` via a
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`try/except` around `try_set_start_method()` so
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`--spawn-backend=subint` on py<3.14 prints a
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clean banner instead of a traceback.
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- `pyproject.toml` — pin `requires-python` `<3.14`
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→ `<3.15`, add `3.14` trove classifier.
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## Files changed
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See `git diff 5cd6df5~1..5cd6df5 --stat`:
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```
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pyproject.toml | 3 +-
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tractor/_testing/pytest.py | 8 +++-
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tractor/spawn/_spawn.py | 15 ++++++
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tractor/spawn/_subint.py | 100 +++++++++++++++++++++++++
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4 files changed, 124 insertions(+), 2 deletions(-)
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```
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Validation on py3.13:
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- registry/gate probe — OK; `_has_subints = False`,
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`subint_proc()` raises `RuntimeError` as expected.
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- `try_set_start_method('subint')` — raises cleanly.
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- `pytest --spawn-backend=subint` — exits with
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`pytest.UsageError` banner.
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- Spawn-relevant test subset — 69 passed, 1 skipped.
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- Full suite on py3.13 deferred (scaffolding is
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no-op on <3.14).
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- Full-suite on py3.14 pending user setting up the
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venv.
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## Human edits
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None — committed as generated by claude. `uv.lock`
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was intentionally left unstaged by the user (pin-
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bump regenerated cp314 wheel entries but they were
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deferred to a follow-up).
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