Add a `wg`-tunnelled 2-host example set

Re-renders gh #482's examples w/ the corrected (infix) maddr
grammar, as the "layer A" slice of the wg plan: declarative
maddrs only, tunnel pre-provisioned out-of-band, zero runtime
changes.

- `wg_maddr.py`: a `frozen=True` `msgspec.Struct` addr carrying
  `bearer`/`peer_pubkey`/`inner` (+ `inner_proto`), a `.maddr`
  property that re-renders the canonical form, and pure
  `mb_pubkey()`/`wg8_pubkey()`/`parse_wg_maddr()`. The parser
  rejects #482's inverted suffix form w/ an actionable error and
  stays **side-effect free** — `verify_wg_peer()` is a separate,
  explicitly impure step the caller composes, never something a
  parse path shells out to.
- `host_a_srv.py`/`host_b_client.py`: the two-host runs, passing
  only `addr.inner` into `open_nursery()`/`open_root_actor()`,
  which is the whole point — the bearer + key layers are already
  established before any bind happens.
- `README.md`: the grammar + the 3-owners table, the `#108`
  branch install line, tunnel setup, and a "what changed vs
  #482" section enumerating the corrections.

Runnable-shaped but **not yet run against a live tunnel**; that's
next, and the reason these sit on the planning branch rather than
in `examples/` proper. `_segments()` marks its stopgap for when
the `wg` codec isn't installed.

(this patch was generated in some part by `claude-code` using `claude-opus-5` (`anthropic`))

ai/prompt-io/claude/20260702T161624Z_65bf9df5_prompt_io.md

@@ -1,80 +0,0 @@
----
-model: claude-fable-5
-service: claude
-session: f4da6654-63f9-4641-b567-f200da46d697
-timestamp: 2026-07-02T16:16:24Z
-git_ref: 65bf9df5
-scope: tests
-substantive: true
-raw_file: 20260702T161624Z_65bf9df5_prompt_io.raw.md
----
-
-## Prompt
-
-> attempt to resolve
-> https://github.com/goodboy/tractor/issues/474
-> do it with /open-wkt.
-
-Issue #474: "We need test suite for
-`.trionics.start_or_cancel()`" — dig out the use case
-from `modden` as a unit test (and provide motivation
-for upstream `trio` to possibly provide better
-porcelain around this case). The wrapper landed via
-PR #464 with no tests.
-
-## Response summary
-
-New `tests/trionics/test_taskc.py` (9 tests) covering
-`start_or_cancel()`, authored in wkt
-`start_or_cancel_tests_474`.
-
-Behaviour was first probed empirically (trio 0.29):
-the lossy `RuntimeError('child exited without calling
-task_status.started()')` only fires when the child
-exits pre-`.started()` WITHOUT propagating the ambient
-`Cancelled` — i.e. when the child (or lib code it
-calls) absorbs the cancel in a graceful-teardown
-pattern; a well-behaved child surfaces `Cancelled`
-straight out of `.start()`. The `modden`
-`progman.open_wks()` use case was reconstructed from
-`modden/runtime/progman.py` accordingly.
-
-Tests (each `use_start_or_cancel` parametrization also
-pins upstream trio's current lossy behaviour as
-wart-documentation):
-
-- `test_sibling_err_not_masked_by_startup_rte` — the
-  `modden` case: sibling error OOB-cancels the shared
-  nursery scope; with the wrapper ONLY the root-cause
-  `ValueError` escapes; bare `.start()` adds the lossy
-  RTE alongside.
-- `test_pure_oob_cancel_not_morphed_to_rte` — plain
-  ancestor `cs.cancel()`: wrapper → clean exit; bare
-  → eg-wrapped RTE.
-- `test_genuine_startup_rte_still_raised` — no
-  cancellation → protocol-bug RTE re-raised same as
-  bare.
-- `test_childs_own_rte_never_demoted_to_cancel` — a
-  child's own `RuntimeError('never got started!')` /
-  `RuntimeError(1234)` under ambient cancel is never
-  demoted to `Cancelled` (exact-msg-match + str-guard
-  regression cover).
-- `test_started_value_and_args_passthru` — happy path:
-  positional args, `name=`, `.started()` value.
-
-Verified: 9/9 pass; 0 flakes across 50 hammer runs;
-two impl mutations (checkpoint removed; guard relaxed
-to substring match) each caught by exactly the
-targeted tests; `tests/trionics/` +
-`tests/test_trioisms.py` subset green (23 passed,
-5 xfailed); ruff clean; 69-col style.
-
-## Files changed
-
-- `tests/trionics/test_taskc.py` — new
-  `start_or_cancel()` unit-test suite (gh #474).
-
-## Human edits
-
-Pending review — session paused pre-commit per user
-deadline; nothing committed as of this entry.

ai/prompt-io/claude/20260702T161624Z_65bf9df5_prompt_io.raw.md

@@ -1,107 +0,0 @@
----
-model: claude-fable-5
-service: claude
-timestamp: 2026-07-02T16:16:24Z
-git_ref: 65bf9df5
-diff_cmd: git diff main..wkt/start_or_cancel_tests_474
----
-
-# Raw output — gh #474 `start_or_cancel()` test suite
-
-## Generated test code
-
-> `git diff main..wkt/start_or_cancel_tests_474 -- tests/trionics/test_taskc.py`
-
-Prose summary of the generated module
-(`tests/trionics/test_taskc.py`):
-
-- module docstring framing the `trio.Nursery.start()`
-  startup-cancellation wart, the wrapper's repair, and
-  the intent that `use_start_or_cancel=False` params
-  double as upstream-trio wart-documentation (break on
-  a trio upgrade → upstream may have shipped porcelain,
-  re-audit the wrapper); cites gh #474 / PR #464 and
-  `modden`'s `progman.open_wks()` as the source use
-  case.
-- shared children: `absorbs_cancel_pre_started()` (the
-  graceful-teardown cancel-absorber which triggers the
-  lossy RTE path) + `raise_val_err()` (fast-erroring
-  sibling).
-- `test_sibling_err_not_masked_by_startup_rte`
-  (parametrized `use_start_or_cancel`): asserts eg
-  contains exactly one `ValueError` and, wrapper-case,
-  NO residual RTE (`eg.split(ValueError)` remainder is
-  `None`); bare-case, the residual RTE carries trio's
-  exact "child exited without calling" wording.
-- `test_pure_oob_cancel_not_morphed_to_rte`
-  (parametrized): wrapper-case runs clean and asserts
-  `cs.cancelled_caught`; bare-case asserts the
-  eg-wrapped RTE.
-- `test_genuine_startup_rte_still_raised`
-  (parametrized): no-cancel protocol bug → RTE with
-  trio's wording from both call forms.
-- `test_childs_own_rte_never_demoted_to_cancel`
-  (parametrized `rte_arg` in `'never got started!'`,
-  `1234`): child cancels the ambient scope then raises
-  its own RTE synchronously (no checkpoint between →
-  deterministically under-cancellation at catch time);
-  asserts the RTE survives with `args[0]` intact.
-- `test_started_value_and_args_passthru`: `.started()`
-  value, positional args and the `name=` kwarg (via
-  `trio.lowlevel.current_task().name`) all forward.
-
-## Non-code output (verbatim highlights)
-
-Behaviour probe (trio 0.29, scratchpad scripts) — the
-decision basis for the test shapes:
-
-```
-== B-sibling-err use_soc=False
-  start raised: RuntimeError('child exited without
-    calling task_status.started()')
-  top-level: ExceptionGroup([ValueError('sibling blew
-    up!'), RuntimeError('child exited without calling
-    task_status.started()')])
-== B-cs-cancel use_soc=False
-  top-level: ExceptionGroup([RuntimeError('child
-    exited without calling task_status.started()')])
-== B-sibling-err use_soc=True
-  start raised: Cancelled()
-  top-level: ExceptionGroup([ValueError('sibling blew
-    up!')])
-== B-cs-cancel use_soc=True
-  start raised: Cancelled()
-  top-level: clean return
-== own-rte-under-cancel (both) -> RTE('never got
-  started!') propagates unchanged
-```
-
-Key finding: with a WELL-BEHAVED (non-absorbing) child
-an OOB ancestor cancel surfaces `Cancelled` directly
-from `.start()` on trio 0.29 — the lossy RTE requires
-the child to absorb its cancel pre-`.started()`, which
-is what `modden`'s `open_from_wks` teardown did. Trio's
-nursery-exit wait defers cancel delivery to children,
-so all tested shapes are deterministic (0 flakes / 50
-runs).
-
-Mutation verification:
-
-```
-mutation 1 (checkpoint_if_cancelled removed):
-  FAILED test_sibling_err_not_masked_by_startup_rte[True]
-  FAILED test_pure_oob_cancel_not_morphed_to_rte[True]
-mutation 2 (guard relaxed to 'started' substring,
-            isinstance dropped):
-  FAILED test_childs_own_rte_never_demoted_to_cancel[never got started!]
-  FAILED test_childs_own_rte_never_demoted_to_cancel[1234]
-```
-
-Final runs:
-
-```
-tests/trionics/test_taskc.py: 9 passed in 0.03s
-hammer: 0/50 runs failed
-tests/trionics/ + tests/test_trioisms.py:
-  23 passed, 5 xfailed in 3.02s
-```

ai/tpt-backends/03_wg_tunnel_bindspace.md

@@ -134,8 +134,7 @@ examples in gh #482) used a *suffix* form
 semantically inverted: it puts the overlay addr where the bearer
 belongs, `tcp` where wg's `udp` `ListenPort` goes, and declares
 no overlay endpoint at all. `parse_wg_maddr()` in
-`examples/multihost/wg_lan/` now rejects it with an actionable
-error.
+`examples/wg_lan/` now rejects it with an actionable error.
 Observed protocol-name lists, for writing the `match`:
 
 | maddr | `[p.name for p in m.protocols()]` |
@@ -198,14 +197,7 @@ side-effect-free; verification is the *caller's* explicit step
 ### 3.4 deliverables
 
 - `examples/` scripts distilled from #482 §§3-5 (this is the
-  unchecked "commit examples from ^" bullet in #443). They live
-  under `examples/multihost/` — `test_docs_examples.py` walks
-  `examples/` recursively and runs every collected file as a
-  subproc asserting `rc == 0` (it doesn't even filter by
-  extension, so a stray `README.md` would be `python`-run too),
-  and `'multihost' not in p[0]` is already in its exclusion
-  list. Anything needing a real second host or a live tunnel
-  belongs there.
+  unchecked "commit examples from ^" bullet in #443).
 - a `docs/` page: tunnel setup, the maddr form, the two-host
   run. Keep prose in the docs; keep the examples runnable and
   minimal.

examples/wg_lan/README.md

@@ -8,13 +8,6 @@ Supersedes the example set in gh
 [#482](https://github.com/goodboy/tractor/issues/482) — see
 [what changed](#what-changed-vs-482).
 
-> **Why `examples/multihost/`?** `tests/test_docs_examples.py`
-> walks `examples/` recursively and runs everything it collects
-> as a subproc, asserting `rc == 0`. These need a real second
-> host and a live `wg` tunnel, so they can't satisfy that;
-> `'multihost' not in p[0]` is already in the test's exclusion
-> list, which is what keeps them out of CI.
-
 ## the maddr form
 
 ```

tests/test_log_sys.py

@@ -2,19 +2,16 @@
 `tractor.log`-wrapping unit tests.
 
 '''
-import logging
 from pathlib import Path
 import shutil
 from types import ModuleType
 
 import pytest
 import tractor
-import trio
 from tractor import (
     _code_load,
     log,
 )
-from tractor.ipc import _chan
 
 
 def test_root_pkg_not_duplicated_in_logger_name():
@@ -225,88 +222,6 @@ def test_add_log_level_pluggable():
             delattr(log.StackLevelAdapter, name.lower())
 
 
-@pytest.mark.parametrize(
-    'suppression',
-    [
-        'level',
-        'logger',
-        'global',
-    ],
-)
-def test_log_guard_skips_payload_formatting(
-    monkeypatch: pytest.MonkeyPatch,
-    suppression: str,
-):
-    '''
-    Suppressed transport logs must not render payloads.
-
-    The original hot-path guard compared only the effective logger
-    level. A logger disabled through its `Logger.disabled` flag or
-    the global `logging.disable()` threshold could therefore still
-    call `pformat()` before `Logger.isEnabledFor()` discarded the
-    record.
-
-    Exercise effective-level, per-logger, and global suppression
-    independently. A poisoned `_chan.pformat()` proves rendering is
-    skipped, while the fake transport proves `Channel.send()` still
-    transmits the original payload and traceback-hiding flag.
-
-    '''
-    sent: list[tuple[object, bool]] = []
-
-    class FakeTransport:
-        async def send(
-            self,
-            payload: object,
-            hide_tb: bool = False,
-        ) -> None:
-            sent.append((payload, hide_tb))
-
-    def fail_pformat(payload: object) -> str:
-        raise AssertionError(
-            f'suppressed log rendered payload: {payload!r}'
-        )
-
-    chan_log = log.get_logger(
-        name=f'guard_test.{suppression}',
-    )
-    std_log = chan_log.logger
-    orig_level: int = std_log.level
-    orig_disable: int = logging.root.manager.disable
-    transport_level: int = log.CUSTOM_LEVELS['TRANSPORT']
-
-    monkeypatch.setattr(_chan, 'log', chan_log)
-    monkeypatch.setattr(_chan, 'pformat', fail_pformat)
-    try:
-        logging.disable(logging.NOTSET)
-        std_log.setLevel(transport_level)
-
-        if suppression == 'level':
-            std_log.setLevel(logging.INFO)
-        elif suppression == 'logger':
-            monkeypatch.setattr(std_log, 'disabled', True)
-        else:
-            logging.disable(logging.CRITICAL)
-
-        assert not chan_log.isEnabledFor(transport_level)
-
-        transport = FakeTransport()
-        chan = _chan.Channel(transport=transport)
-        payload = object()
-
-        async def send_payload() -> None:
-            await chan.send(
-                payload,
-                hide_tb=True,
-            )
-
-        trio.run(send_payload)
-        assert sent == [(payload, True)]
-    finally:
-        std_log.setLevel(orig_level)
-        logging.disable(orig_disable)
-
-
 # TODO, moar tests against existing feats:
 # ------ - ------
 # - [ ] color settings?

tests/trionics/test_taskc.py

@@ -1,333 +0,0 @@
-'''
-`tractor.trionics._taskc.start_or_cancel()` unit tests.
-
-`trio.Nursery.start()` collapses an out-of-band (ancestor)
-cancellation into a lossy,
-
-  `RuntimeError('child exited without calling
-  task_status.started()')`
-
-whenever the started child exits pre-`.started()` WITHOUT
-propagating the ambient `trio.Cancelled`; a common outcome
-when the child (or any lib code it calls) runs a graceful
-teardown which absorbs the cancel and returns early. Our
-`start_or_cancel()` wrapper re-surfaces the real in-flight
-cancellation in that case so the true root error/cancel
-propagates to the `.start()` caller instead.
-
-These tests verify both that repair AND document upstream
-`trio`'s current lossy behaviour via the
-`use_start_or_cancel=False` parametrizations; if a `trio`
-upgrade breaks one of THOSE cases it likely means upstream
-shipped better startup-cancellation porcelain and our
-wrapper deserves a re-audit!
-
-The core use case was dug out of `modden`'s
-`progman.open_wks()` program-spawn machinery as per gh
-issue #474; the wrapper landed originally via gh PR #464.
-
-'''
-import pytest
-import trio
-from trio import TaskStatus
-
-from tractor.trionics import start_or_cancel
-
-
-async def absorbs_cancel_pre_started(
-    task_status: TaskStatus[None] = trio.TASK_STATUS_IGNORED,
-):
-    '''
-    Swallow the ambient (ancestor-scope) cancel and return
-    early, a naughty-but-realistic graceful-teardown pattern
-    and the exact shape which causes `trio.Nursery.start()`
-    to raise its lossy startup `RuntimeError` in place of
-    the real `trio.Cancelled`.
-
-    '''
-    try:
-        await trio.sleep_forever()
-    except trio.Cancelled:
-        return
-
-
-async def raise_val_err():
-    '''
-    Sibling task which blows up (fast) thus OOB-cancelling
-    the shared parent-nursery's cancel-scope.
-
-    '''
-    await trio.lowlevel.checkpoint()
-    raise ValueError('sibling blew up!')
-
-
-@pytest.mark.parametrize(
-    'use_start_or_cancel',
-    [
-        True,
-        False,
-    ],
-)
-def test_sibling_err_not_masked_by_startup_rte(
-    use_start_or_cancel: bool,
-):
-    '''
-    The `modden.runtime.progman` use case: a sibling task
-    errors while the `.start()`-ed child is still
-    pre-`.started()`, OOB-cancelling the shared nursery
-    scope; the child absorbs its cancel (graceful teardown)
-    and exits early.
-
-    - with `start_or_cancel()` the in-flight cancellation
-      is re-surfaced as the real `trio.Cancelled` (then
-      absorbed by the cancelled nursery scope) so ONLY the
-      root-cause sibling error escapes the nursery.
-
-    - with a bare `.start()`, upstream `trio` (currently)
-      also delivers its lossy startup `RuntimeError`
-      alongside, obscuring that the child was in fact
-      cancelled due to the sibling's error.
-
-    `cancelled_at_start` records that the wrapper's own await
-    raises `Cancelled`, rather than merely relying on the
-    nursery's eventual exception-group shape.
-
-    '''
-    cancelled_at_start: list[bool] = []
-
-    async def main():
-        async with trio.open_nursery() as tn:
-            tn.start_soon(raise_val_err)
-            if use_start_or_cancel:
-                try:
-                    await start_or_cancel(
-                        tn,
-                        absorbs_cancel_pre_started,
-                    )
-                except trio.Cancelled:
-                    cancelled_at_start.append(True)
-                    raise
-            else:
-                await tn.start(absorbs_cancel_pre_started)
-
-    with pytest.raises(ExceptionGroup) as excinfo:
-        trio.run(main)
-
-    eg: ExceptionGroup = excinfo.value
-    val_eg, rest_eg = eg.split(ValueError)
-    assert len(val_eg.exceptions) == 1
-
-    if use_start_or_cancel:
-        assert cancelled_at_start == [True]
-        # the re-surfaced `Cancelled` is absorbed by the
-        # (sibling-error cancelled) nursery scope leaving
-        # NO startup-noise, just the root cause.
-        assert rest_eg is None
-    else:
-        # the `trio` wart: a lossy startup RTE rides along
-        # with (and distracts from) the root cause.
-        rte = rest_eg.exceptions[0]
-        assert isinstance(rte, RuntimeError)
-        assert 'child exited without calling' in rte.args[0]
-
-
-@pytest.mark.parametrize(
-    'use_start_or_cancel',
-    [
-        True,
-        False,
-    ],
-)
-def test_pure_oob_cancel_not_morphed_to_rte(
-    use_start_or_cancel: bool,
-):
-    '''
-    A plain (error-free) ancestor `CancelScope.cancel()`
-    fired while the (cancel-absorbing) child is still
-    pre-`.started()`:
-
-    - `start_or_cancel()` re-surfaces the `Cancelled` so
-      the cancelled scope exits CLEAN, no error at all.
-
-    - a bare `.start()` (currently) morphs the plain
-      cancel into an (eg-wrapped) startup `RuntimeError`.
-
-    `cancelled_at_start` proves cancellation interrupts the
-    wrapper call itself before the cancelled scope exits.
-
-    '''
-    cancelled_at_start: list[bool] = []
-
-    async def main():
-        with trio.CancelScope() as cs:
-            async with trio.open_nursery() as tn:
-
-                async def canceller():
-                    await trio.lowlevel.checkpoint()
-                    cs.cancel()
-
-                tn.start_soon(canceller)
-                if use_start_or_cancel:
-                    try:
-                        await start_or_cancel(
-                            tn,
-                            absorbs_cancel_pre_started,
-                        )
-                    except trio.Cancelled:
-                        cancelled_at_start.append(True)
-                        raise
-                else:
-                    await tn.start(
-                        absorbs_cancel_pre_started,
-                    )
-
-        assert cs.cancelled_caught
-
-    if use_start_or_cancel:
-        trio.run(main)
-        assert cancelled_at_start == [True]
-    else:
-        with pytest.raises(ExceptionGroup) as excinfo:
-            trio.run(main)
-
-        rte = excinfo.value.exceptions[0]
-        assert isinstance(rte, RuntimeError)
-        assert 'child exited without calling' in rte.args[0]
-
-
-@pytest.mark.parametrize(
-    'use_start_or_cancel',
-    [
-        True,
-        False,
-    ],
-)
-def test_genuine_startup_rte_still_raised(
-    use_start_or_cancel: bool,
-):
-    '''
-    Absent ANY in-flight cancellation, a child exiting
-    cleanly without calling `task_status.started()` is a
-    genuine startup-protocol bug; `start_or_cancel()` must
-    re-raise the resulting `RuntimeError` exactly like a
-    bare `.start()` does.
-
-    '''
-    async def exits_wo_started(
-        task_status: TaskStatus[None] = (
-            trio.TASK_STATUS_IGNORED
-        ),
-    ):
-        await trio.lowlevel.checkpoint()
-
-    async def main():
-        async with trio.open_nursery() as tn:
-            with pytest.raises(RuntimeError) as excinfo:
-                if use_start_or_cancel:
-                    await start_or_cancel(
-                        tn,
-                        exits_wo_started,
-                    )
-                else:
-                    await tn.start(exits_wo_started)
-
-            rte = excinfo.value
-            assert (
-                'child exited without calling'
-                in
-                rte.args[0]
-            )
-
-    trio.run(main)
-
-
-@pytest.mark.parametrize(
-    'rte_arg',
-    [
-        # Broad substring matches would wrongly demote either
-        # child-owned error to `Cancelled` under cancellation.
-        'never got started!',
-        'child exited without calling user hook',
-        # non-`str` first-arg edge; must not `TypeError`
-        # inside the wrapper's msg-match guard.
-        1234,
-    ],
-)
-def test_childs_own_rte_never_demoted_to_cancel(
-    rte_arg: str|int,
-):
-    '''
-    A child's OWN `RuntimeError`, one which merely smells
-    like `trio`'s startup wording (or carries a non-`str`
-    first arg), raised under ambient cancellation must NOT
-    be demoted to a `trio.Cancelled` by the exact-msg-match
-    guard inside `start_or_cancel()`; the real error must
-    always propagate to the caller as the sole exception-group
-    leaf, preserving object identity.
-
-    '''
-    child_rte = RuntimeError(rte_arg)
-
-    async def cancels_cs_then_raises(
-        task_status: TaskStatus[None] = (
-            trio.TASK_STATUS_IGNORED
-        ),
-    ):
-        # cancel the ambient (ancestor) scope then raise
-        # sync-ly, no checkpoint between, so the child
-        # deterministically dies with ITS error while the
-        # caller is under effective cancellation.
-        cs.cancel()
-        raise child_rte
-
-    cs = trio.CancelScope()
-
-    async def main():
-        with cs:
-            async with trio.open_nursery() as tn:
-                await start_or_cancel(
-                    tn,
-                    cancels_cs_then_raises,
-                )
-
-    with pytest.raises(ExceptionGroup) as excinfo:
-        trio.run(main)
-
-    assert excinfo.value.exceptions == (child_rte,)
-
-
-def test_started_value_and_args_passthru():
-    '''
-    Happy path: positional args, the `name=` kwarg and the
-    `.started(value)`-delivered value all pass through
-    `start_or_cancel()` identically to a bare `.start()`.
-
-    '''
-    async def echo_started(
-        *args,
-        task_status: TaskStatus[tuple] = (
-            trio.TASK_STATUS_IGNORED
-        ),
-    ):
-        task_name: str = trio.lowlevel.current_task().name
-        task_status.started((
-            args,
-            task_name,
-        ))
-
-    async def main():
-        async with trio.open_nursery() as tn:
-            (
-                args,
-                task_name,
-            ) = await start_or_cancel(
-                tn,
-                echo_started,
-                'chillin',
-                10,
-                name='doggy',
-            )
-            assert args == ('chillin', 10)
-            assert task_name == 'doggy'
-
-    trio.run(main)

tractor/ipc/_chan.py

@@ -198,6 +198,9 @@ class Channel:
         # assert transport.raddr == addr
         chan = Channel(transport=transport)
 
+        # ?TODO, compact this into adapter level-methods?
+        # -[ ] would avoid extra repr-calcs if level not active?
+        #   |_ how would the `calc_if_level` look though? func?
         if log.at_least_level('runtime'):
             from tractor.devx import (
                 pformat as _pformat,
@@ -322,12 +325,10 @@ class Channel:
         '''
         __tracebackhide__: bool = hide_tb
         try:
-            if log.at_least_level('transport'):
-                # don't materialize the payload repr if not necessary
-                log.transport(
-                    '=> send IPC msg:\n\n'
-                    f'{pformat(payload)}\n'
-                )
+            log.transport(
+                '=> send IPC msg:\n\n'
+                f'{pformat(payload)}\n'
+            )
             # assert self._transport  # but why typing?
             await self._transport.send(
                 payload,

tractor/ipc/_transport.py

@@ -309,10 +309,7 @@ class MsgpackTransport(MsgTransport):
             log.transport(f'received header {size}')  # type: ignore
             msg_bytes: bytes = await self.recv_stream.receive_exactly(size)
 
-            if log.at_least_level('transport'):
-                log.transport(  # type: ignore
-                    f'received {msg_bytes}'
-                )
+            log.transport(f"received {msg_bytes}")  # type: ignore
             try:
                 # NOTE: lookup the `trio.Task.context`'s var for
                 # the current `MsgCodec`.

tractor/log.py

@@ -111,7 +111,9 @@ def at_least_level(
     if isinstance(level, str):
         level: int = CUSTOM_LEVELS[level.upper()]
 
-    return log.isEnabledFor(level)
+    if log.getEffectiveLevel() <= level:
+        return True
+    return False
 
 
 # TODO, compare with using a "filter" instead?

tractor/msg/_ops.py

@@ -306,15 +306,15 @@ class PldRx(Struct):
             ):
                 try:
                     pld: PayloadT = self._pld_dec.decode(pld)
-                    if log.at_least_level('runtime'):
-                        # don't materialize the payload repr if not necessary
-                        log.runtime(
-                            f'Decoded payload for\n'
-                            f'\n'
-                            f'{msg}\n'
-                            f'where, '
-                            f'{type(msg).__name__}.pld={pld!r}\n'
-                        )
+                    log.runtime(
+                        f'Decoded payload for\n'
+                        # f'\n'
+                        f'{msg}\n'
+                        # ^TODO?, ideally just render with `,
+                        # pld={decode}` in the `msg.pformat()`??
+                        f'where, '
+                        f'{type(msg).__name__}.pld={pld!r}\n'
+                    )
                     return pld
                 except TypeError as typerr:
                     __tracebackhide__: bool = False

tractor/runtime/_rpc.py

@@ -1003,18 +1003,20 @@ async def process_messages(
             task_status.started(loop_cs)
 
             async for msg in chan:
-                if log.at_least_level('transport'):
-                    log.transport(   # type: ignore
-                        f'IPC msg from peer\n'
-                        f'<= {chan.aid.reprol()}\n\n'
+                log.transport(   # type: ignore
+                    f'IPC msg from peer\n'
+                    f'<= {chan.aid.reprol()}\n\n'
 
-                        # TODO: pretty-printing structs is FRAGILE;
-                        # -[ ] add a non-raising log formatter with
-                        #      native-repr fallback before using
-                        #      `.msg.pretty_struct` here.
-                        # f'{pretty_struct.pformat(msg)}\n'
-                        f'{msg}\n'
-                    )
+                    # TODO: use of the pprinting of structs is
+                    # FRAGILE and should prolly not be
+                    #
+                    # avoid fmting depending on loglevel for perf?
+                    # -[ ] specifically `pretty_struct.pformat()` sub-call..?
+                    #   - how to only log-level-aware actually call this?
+                    # -[ ] use `.msg.pretty_struct` here now instead!
+                    # f'{pretty_struct.pformat(msg)}\n'
+                    f'{msg}\n'
+                )
 
                 match msg:
                     # msg for an ongoing IPC ctx session, deliver msg to
@@ -1260,12 +1262,11 @@ async def process_messages(
                         log.exception(message)
                         raise RuntimeError(message)
 
-                if log.at_least_level('transport'):
-                    log.transport(
-                        'Waiting on next IPC msg from\n'
-                        f'peer: {chan.aid.reprol()}\n'
-                        f'|_{chan}\n'
-                    )
+                log.transport(
+                    'Waiting on next IPC msg from\n'
+                    f'peer: {chan.aid.reprol()}\n'
+                    f'|_{chan}\n'
+                )
 
             # END-OF `async for`:
             # IPC disconnected via `trio.EndOfChannel`, likely

tractor/trionics/_taskc.py

@@ -349,10 +349,7 @@ async def start_or_cancel(
             # demote it to a `Cancelled`, losing the real error. The
             # `isinstance` guard also avoids a `TypeError` when
             # `rte.args[0]` isn't a `str`.
-            rte.args[0] == (
-                'child exited without calling '
-                'task_status.started()'
-            )
+            'child exited without calling' in rte.args[0]
         ):
             # re-raises the in-flight `trio.Cancelled` IFF we're
             # under effective cancellation; else a cheap no-op and

uv.lock

@@ -308,11 +308,11 @@ wheels = [
 
 [[package]]
 name = "idna"
-version = "3.18"
+version = "3.10"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/cd/63/9496c57188a2ee585e0f1db071d75089a11e98aa86eb99d9d7618fc1edce/idna-3.18.tar.gz", hash = "sha256:ffb385a7e039654cef1ab9ef32c6fafe283c0c0467bba1d9029738ce4a14a848", size = 196711, upload-time = "2026-06-02T14:34:07.794Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/f1/70/7703c29685631f5a7590aa73f1f1d3fa9a380e654b86af429e0934a32f7d/idna-3.10.tar.gz", hash = "sha256:12f65c9b470abda6dc35cf8e63cc574b1c52b11df2c86030af0ac09b01b13ea9", size = 190490, upload-time = "2024-09-15T18:07:39.745Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/1e/5e/d4e9f1a599fb8e573b7b87160658329fbf28d19eac2718f51fc3def3aa5a/idna-3.18-py3-none-any.whl", hash = "sha256:7f952cbe720b688055e3f87de14f5c3e5fdaa8bc3928985c4077ca689de849a2", size = 65455, upload-time = "2026-06-02T14:34:06.319Z" },
+    { url = "https://files.pythonhosted.org/packages/76/c6/c88e154df9c4e1a2a66ccf0005a88dfb2650c1dffb6f5ce603dfbd452ce3/idna-3.10-py3-none-any.whl", hash = "sha256:946d195a0d259cbba61165e88e65941f16e9b36ea6ddb97f00452bae8b1287d3", size = 70442, upload-time = "2024-09-15T18:07:37.964Z" },
 ]
 
 [[package]]
@@ -900,11 +900,11 @@ wheels = [
 
 [[package]]
 name = "setuptools"
-version = "83.0.0"
+version = "82.0.1"
 source = { registry = "https://pypi.org/simple" }
-sdist = { url = "https://files.pythonhosted.org/packages/34/26/f5d29e25ffdb535afef2d35cdb55b325298f96debd670da4c325e08d70f4/setuptools-83.0.0.tar.gz", hash = "sha256:025bccbbf0fa05b6192bc64ae1e7b16e001fd6d6d4d5de03c97b1c1ade523bef", size = 1154254, upload-time = "2026-07-04T15:31:22.699Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/4f/db/cfac1baf10650ab4d1c111714410d2fbb77ac5a616db26775db562c8fab2/setuptools-82.0.1.tar.gz", hash = "sha256:7d872682c5d01cfde07da7bccc7b65469d3dca203318515ada1de5eda35efbf9", size = 1152316, upload-time = "2026-03-09T12:47:17.221Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/5d/40/e1e72872c6354b306daef1703549e8e83b4d43cfea356311bf722a043752/setuptools-83.0.0-py3-none-any.whl", hash = "sha256:29b23c360f22f414dc7336bb39178cc7bcbf6021ed2733cde173f09dba19abb3", size = 1008090, upload-time = "2026-07-04T15:31:20.885Z" },
+    { url = "https://files.pythonhosted.org/packages/9d/76/f789f7a86709c6b087c5a2f52f911838cad707cc613162401badc665acfe/setuptools-82.0.1-py3-none-any.whl", hash = "sha256:a59e362652f08dcd477c78bb6e7bd9d80a7995bc73ce773050228a348ce2e5bb", size = 1006223, upload-time = "2026-03-09T12:47:15.026Z" },
 ]
 
 [[package]]