Make the release body fit, and widen the gates to the drift they missed - #1329
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The v0.1.12 burndown's release and gate tooling: two defects, five riders. `release.yml`'s `Tag and create GitHub Release` step 422'd on v0.1.10, whose CHANGELOG section extracts to 147,918 characters against GitHub's 125,000 limit, and it failed after PyPI had accepted the immutable archives and after the tag was cut — the one point in the pipeline where a step must not fail. `scripts/release.py notes` is now total. Within budget it publishes the section verbatim; past it, it regenerates the shape the v0.1.10 release was completed by hand with — the `###` subsection headers, one condensed line per bullet carrying its lead-in and its last issue or pull-request reference, and a link to the canonical section in the CHANGELOG at the tag. Run against v0.1.10's real section the generated index reproduces the released body's 73 index lines byte for byte. In the pathological case where even the index overflows it is truncated and says so, so the builder cannot be the thing that fails. `scripts/check_grammar_alignment.py` held rule-name headers together and was blind to terminals, rule references and production bodies. It now audits terminals declared against terminals referenced, within each file and in both directions; compares the pattern of every regex-bodied terminal across the two files, after a semantics-preserving normalisation of Lark's delimiter and quote escapes; and compares the rules and terminals each of the 80 shared productions refers to, with Lark's quoted literals mapped through the chapter's own terminal table rather than a hand-written one. Two notational differences are folded rather than reported: a rule's reference to itself, since Lark spells repetition with left recursion where the chapter uses a Kleene star, and a waived spec-only production, which the existing ALLOWLIST already pins to the Lark rule that inlines it. The body comparison needs no waivers of its own. The extended gate went red on four live Chapter 10 defects, two of them beyond the two the issue named. Typed holes absent from `primary_expr` and `BLOCK_COMMENT`'s non-nesting regex were known. The new body comparison found the other two: `slot_ref` and `result_ref` admitted an arbitrary `type_expr` where the parser accepts only `UPPER_IDENT type_args?`, so the published grammar called a refinement-typed slot reference legal when it is a syntax error; and `effect_list` carried a second alternative ambiguous with the one beside it, `effect_ref` already admitting a bare `UPPER_IDENT`. All four are fixed in the chapter. The five riders. `KNOWN_ISSUES.md`'s Bugs table is gated one row per open `bug` issue — structurally always, and against the tracker behind `--check-bug-issues`, because a pre-commit hook must not depend on a network call and mid-cycle the two legitimately disagree. TESTING.md's dual-target row is gated against the conformance manifest and a live run of the differential, with two arithmetic checks the individual figures cannot make. `check_examples_run.py` derives which examples need an output sentinel from what each one declares, validated against the live effect registry, instead of naming three. The burndown's ad-hoc corpus differential becomes `scripts/check_corpus_differential.py`, documented as a CI-optional instrument and deliberately not a hook. And README's project-status line has every count gated rather than only its test count — four of the five patterns that used to sit there matched no README text at all, and returned silently rather than saying so. Closes #1288 Closes #1290 Co-Authored-By: Claude <noreply@anthropic.invalid>
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Verification record (lean protocol: spot-verification + CodeRabbit; no full adversarial round)Under the burndown's budget ruling this group carries RED-first implementation evidence, per-item mutation batteries, the coordinator's spot-verification of the rebased head, and CodeRabbit as the independent second reader. RED-first and differential evidence
Mutation tables (from the implementation round; every cell reverted after)
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📝 WalkthroughWalkthroughThe pull request adds corpus differential checking, documentation-count validation, resource-derived example sentinels, expanded grammar alignment, and release-note size handling. It also updates grammar documentation, release wiring, validation guidance, and published test metrics. ChangesValidation and release safeguards
Estimated code review effort: 5 (Critical) | ~120 minutes Merge Risk: 🟡 Moderate · up to This PR adds release and drift-validation gates, but unresolved test behavior can cause CI failures or nondeterministic validation, while the documented test-count breakdown remains ambiguous. The PR is not fully merge-ready until these bounded issues are corrected or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant CorpusChecker
participant BaseWorktree
participant BaseCompiler
participant HeadCompiler
CorpusChecker->>BaseWorktree: materialise base revision
CorpusChecker->>BaseCompiler: compile corpus programmes
CorpusChecker->>HeadCompiler: compile corpus programmes
BaseCompiler-->>CorpusChecker: return WAT digests or diagnostics
HeadCompiler-->>CorpusChecker: return WAT digests or diagnostics
CorpusChecker->>CorpusChecker: classify and report differences
Possibly related PRs
Suggested labels: 🚥 Pre-merge checks | ✅ 7 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (7 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@RELEASING.md`:
- Around line 96-103: Update the release checklist item containing
check_doc_counts.py --check-bug-issues to name GH_TOKEN and GITHUB_TOKEN as the
optional environment variables used for GitHub API authentication, while noting
that the check runs unauthenticated when neither is set.
In `@scripts/check_corpus_differential.py`:
- Around line 403-423: Update the subprocess.run call in the compiler execution
flow to decode compiler output leniently, such as by configuring an
error-handling policy that replaces undecodable bytes, so UnicodeDecodeError
cannot escape the Artifact failure-recording contract. Preserve the existing
timeout and OSError handling and ensure both compiler diagnostics remain
available as captured data.
- Around line 641-646: Update the --work-dir default in the argument parser to
use a repository-local directory instead of tempfile.gettempdir(), remove the
now-unused tempfile import, and add that generated directory to .gitignore.
Preserve base_checkout’s existing SHA-keyed reuse behavior.
In `@scripts/check_doc_counts.py`:
- Around line 952-968: Update scripts/check_doc_counts.py lines 952-968 in
dual_target_split to catch subprocess.TimeoutExpired around subprocess.run and
return None so main reports the failure. Also update scripts/check_doc_counts.py
lines 1105-1125 around urlopen/json.load to catch HTTPError, URLError, socket
timeout, and JSONDecodeError, returning an error string rather than an empty
list so check_bug_issue_parity preserves failure reporting.
In `@scripts/check_grammar_alignment.py`:
- Around line 394-411: Update the block-state handling in the function
containing _TERMINAL_DECL so a blank line ends the current skipped group by
resetting in_group, while retaining the existing at_block_start behavior and
marker detection for subsequent blocks.
- Around line 135-154: Update _span_end to track regex character classes and
ignore delimiters encountered inside [...] until the class closes, while
preserving escaped-character handling. Add a test for ANNOTATION_COMMENT that
verifies the extracted spec body is non-empty and includes content beyond the
terminal, preventing _BARE_REGEX from making the alignment check vacuous.
In `@spec/10-grammar.md`:
- Around line 24-27: Update the BLOCK_COMMENT grammar rule to exclude both “{-”
and “-}” delimiters from its character alternative, while retaining recursive
BLOCK_COMMENT nesting. Ensure the rule requires every nested opener to be
matched and preserves the depth-counting behavior implemented by scan_comments.
Apply the same fix in `@spec/10-grammar.md` around lines 310 - 312.
In `@tests/test_check_corpus_differential.py`:
- Around line 282-291: Strengthen
test_the_both_failed_count_is_reported_not_hidden by asserting the complete
summary line for the compiled-at-neither-revision count, rather than the
ambiguous substring "1". Keep the existing "neither revision" assertion only if
needed, and ensure the test fails when that count is reported as 0.
- Around line 389-417: Extend the tests around collect to invoke its parallel
jobs path and verify results remain associated with the corresponding input
paths, preserving ThreadPoolExecutor.map input ordering and strict key/result
pairing. Add a focused test for _side_env that verifies PYTHONPATH is replaced
with the side-specific value rather than inherited or appended from the caller
environment.
In `@tests/test_check_doc_counts.py`:
- Around line 868-875: Update test_the_shipped_table_parses so its non-vacuity
check does not depend on the current bug count: replace the literal len(rows) >
5 threshold with a positive-length assertion, while preserving the existing
uniqueness assertion.
- Around line 937-943: Update
test_the_parity_check_is_not_wired_into_the_default_run to inspect every
check_bug_issue_parity( call site rather than only the last occurrence; verify
each occurrence is guarded by args.check_bug_issues so any unguarded invocation
causes the test to fail.
In `@tests/test_check_examples_run.py`:
- Around line 415-428: Strengthen
test_a_resource_op_under_an_unknown_effect_is_an_error by asserting the error
message uses the effect-missing wording for the resource_registry_errors branch,
not merely the shared “could not find” text. Keep the existing FileIO assertion
and ensure the assertion distinguishes the missing effect from an absent
operation.
In `@tests/test_grammar_alignment.py`:
- Around line 513-515: Update
test_an_aliased_alternative_is_not_read_as_a_rule_reference to assert the actual
fn_call aliases qualified_call, module_call, and constructor_call are absent
from the normalized rule body, and add a positive control confirming the
expected non-alias content is present so an empty body cannot satisfy the test.
- Around line 498-502: Update test_a_rule_referring_to_itself_is_not_drift to
assert at the symbol level that add_expr’s self-reference is excluded from the
drift results, rather than asserting the entire body_drift result is empty;
retain the existing left-recursion assertion.
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Inline comments:
In `@scripts/check_corpus_differential.py`:
- Around line 651-654: Validate the --timeout argument in the argparse
configuration so only values greater than zero are accepted, rejecting 0 and
negative inputs while preserving the existing default. Add parser tests covering
both invalid values before implementing the validation, using the timeout
argument definition and parser setup as the change points.
- Around line 583-584: Update the base reproduction command generation in the
checker so it uses the same absolute working-tree program path as the
working-tree command, rather than resolving a relative program path under
info.base_root. First add a regression test covering a changed corpus file and
verify it fails for this path mismatch, then apply the command-generation fix
while preserving the existing output format.
In `@scripts/check_doc_counts.py`:
- Line 917: Update the _PYTEST_SUMMARY parsing and its consumers so pytest
summaries containing only passed or only skipped tests treat the missing
category as zero. Extend the associated tests to cover passed-only and
skipped-only summaries while preserving handling of summaries that include both
categories.
In `@scripts/check_examples_run.py`:
- Around line 472-521: Restrict the pinned-name set in the sentinel coverage
function to specs whose .vera files were actually inspected, excluding names
skipped by the missing-file check. Track inspected names during the loop and
intersect them with run_specs entries having expect before evaluating pinned -
set(signals_by_name), so missing files are not reported as spurious sentinels.
In `@tests/test_check_corpus_differential.py`:
- Around line 356-365: Normalize path reporting in canary_error within
scripts/check_corpus_differential.py by emitting the expected root via
Path.as_posix(), preserving the POSIX assertion at
tests/test_check_corpus_differential.py:356-365. Update _first_error to remove
both str(path) and path.as_posix() from the reason, preserving the assertion at
tests/test_check_corpus_differential.py:455-464; both sites must support Windows
and POSIX path spellings.
In `@tests/test_check_examples_run.py`:
- Around line 342-380: Add a test method alongside the existing resource_signals
derivation tests using a corpus source whose effect row contains a
module-qualified reference such as Mod.DB, and assert resource_signals returns
an empty frozenset. This must verify that only unqualified ast.EffectRef entries
for the built-in DB are credited, while qualified user-module effects are
ignored.
In `@tests/test_grammar_alignment.py`:
- Around line 519-522: Add a second assertion to
test_a_regex_body_ending_in_a_slash_is_not_truncated using the chapter spelling
with the unescaped slash in the character class, [^/*]. Verify
_MOD.strip_comment returns that complete line unchanged, while retaining the
existing escaped-slash assertion.
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Windows CI was red in all three cells for one reason, and it is the same
shape of defect the review found in the grammar gate.
`scripts/check_corpus_differential.py`'s `_first_error` stripped the
compiled program's path out of a diagnostic by matching `str(path)`,
which ties the strip to the host's separator. A diagnostic carrying the
POSIX spelling on Windows went unstripped and its absolute path pushed
the message past the 160-character truncation. Both spellings are
stripped now. The parameter is a `PurePath` rather than a `Path`:
nothing there touches the filesystem, and the wider type lets a cell
render a Windows path on any host, so the case fails on macOS instead of
waiting for the Windows cell. The canary cell asserted the POSIX shape
of a root the message renders with the host's separators; it asserts the
path it was given, which is the property it meant.
The grammar gate had the same shape with worse consequences.
`_span_end` read a `/` inside a regex character class as the closing
delimiter, so the chapter's `ANNOTATION_COMMENT` — which spells the
class `[^/*]` where `vera/grammar.lark` escapes it `[^\/*]` — was
truncated mid-pattern. A truncated body is not a bare regex, and
`terminal_patterns` skips anything that is not, so that terminal was
never compared at all: the gate was green on it by never looking. The
scanner now tracks classes, and a drifted `ANNOTATION_COMMENT` is caught
rather than skipped.
The rest of the review round, each verified against the code first:
the differential rejects a non-positive `--timeout`, which would expire
before any compile finished and report "no movers" over a corpus that
never compiled; it decodes compiler output leniently, a stray byte
having otherwise raised `UnicodeDecodeError` out of `subprocess.run`
past both handlers and aborted the whole run; it checks the base
revision out repository-locally rather than under a predictable shared
temporary path whose contents it puts on `PYTHONPATH`; and its
reproduction command names the working-tree file it actually compared.
`check_doc_counts.py` reads a pytest summary that omits a zero-count
category, and its two external calls join the script's own error
convention instead of ending the run on a traceback.
`check_examples_run.py` restricts the pinned set to the specs it
actually opened, so a spec whose file is missing stops drawing the
diagnosis for a file that does not exist. `skipped_terminals` closes
its group at a blank line, so an unheaded block cannot inherit the
waiver. And the chapter's `BLOCK_COMMENT` excludes both delimiters from
its character alternative: `{- {- -}` was derivable from a rule
describing a construct the implementation rejects as unterminated
(E020, measured).
One finding is refuted rather than fixed. It reported that
`tests/test_grammar_alignment.py`'s alias assertion names a `func_call`
that exists in neither file, making the cell unfalsifiable. It does
exist: `vera/grammar.lark:229` spells the first `fn_call` alternative
`-> func_call`, the extractor lists it among that rule's five aliases,
and the mutation that stops `rule_bodies` stripping aliases kills the
cell. Its secondary point stands and is taken — an empty body would
have satisfied the assertion — so the cell now carries a positive
control and checks every alias on the rule.
Co-Authored-By: Claude <noreply@anthropic.invalid>
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Inline comments:
In `@tests/test_check_corpus_differential.py`:
- Around line 574-586: Make test_the_parallel_branch_is_the_one_being_exercised
deterministic by protecting thread-ID recording with a lock and having
fake_compile wait on a threading.Barrier configured for four participants before
returning. Keep the existing jobs=4 invocation and assertion so four callbacks
must overlap on worker threads.
In `@tests/test_check_examples_run.py`:
- Around line 476-482: Remove the assertion excluding “read_file” from errors[0]
in the test around the effect-missing diagnostic, while retaining the
effect-specific “has no 'FileIO'” assertion.
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The wall was red on all seven real cells with one failing test, `TestParallelCollection::test_the_parallel_branch_is_the_one_being _exercised`, and the cause is not the one the failure message named. `collect` selects its branch on `if jobs <= 1`, reading the caller's explicit argument; the cell passes `jobs=4`, so the parallel branch was taken on CI exactly as it is here. The only cpu-derived value in the script is the `--jobs` CLI default, which the cell never reaches. What varied was `ThreadPoolExecutor`'s own scheduling: it creates a worker only when no idle one is available, so a few trivial callables can be drained by a single worker before `map` has finished submitting them. Measured over 200 trials on this 12-core host the distinct-thread count came out 2, 3 or 4 — never a fixed number — and with two items instead of eight it is 1 here too, which reproduces the CI failure locally on a machine with six times the cores. `len(threads) > 1` was asserting a scheduling lottery, and the cell inherited whichever way the host happened to resolve it. The assertion is now the property its own failure message already claimed: the pool never runs work inline, so the calling thread must not appear among the threads that ran a compile. That holds for every worker count — over a 20-cell sweep of jobs x item counts the calling-thread predicate was true exactly when `jobs <= 1`, including the four cells where a pool of 2, 3, 4 or 8 workers spawned exactly one thread. A complementary cell asserts the other direction, so the two branches are told apart by one observation rather than by a count. No new seam was needed: `collect` already takes `jobs`, and the CLI already exposes `--jobs`. Both directions are mutation-checked — the pool-drop mutant this cell exists for still dies, and so does a mutant that gives the sequential branch a pool. Co-Authored-By: Claude <noreply@anthropic.invalid>
The three Windows cells failed on `TestUndecodableCompilerOutput::test_strict_decoding_is_what_would_have _raised` with "DID NOT RAISE", and the decode was not what varied. Both of that cell's calls already named `encoding="utf-8"`, as do all five `subprocess.run` calls in the script it guards; `check_explicit_encoding` agrees. So the codec was pinned on every platform and the byte reaching it was not: what a child process puts on a pipe is the operating system's business, and the cell was measuring that round-trip in order to make a claim about decoding. It now measures the decoding. `io.TextIOWrapper` is not a stand-in for what `subprocess.run` does — it is what `subprocess.run` does, since `Popen` wraps each captured pipe in exactly that object with exactly the `encoding` and `errors` it was handed. Reading `b"\x97"` through one raises on strict and yields the replacement character on `replace`, with no child, no pipe and nothing platform-dependent left in the cell. A second cell pins the fixture: the byte has to be undecodable in the codec the script actually names. `b"\x97"` is invalid UTF-8 but decodes under cp1252 as an em dash, so a decode left to the platform default would not have raised on Windows either — the byte is only a good fixture while the codec is spelled out, which is the same reason the script spells it out. Swapping the fixture for a UTF-8-safe byte kills the pair. The guard on `compile_one` is unchanged and still held by `test_the_compile_asks_for_lenient_decoding`, which pins the call's kwargs: removing either `errors="replace"` or `encoding="utf-8"` from the script goes red there. These two cells are the demonstration of why that guard matters, and making the twin itself exercise the call path would mean spawning the child again, which is the shape being removed. Co-Authored-By: Claude <noreply@anthropic.invalid>
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Inline comments:
In `@TESTING.md`:
- Line 9: Update the Tests count in TESTING.md so its categories are mutually
exclusive and follow pytest collection accounting: either label the 26 stress
tests as deselected or include them in skipped, matching the behavior documented
near the stress-test guidance. Ensure the reported total and category counts
reconcile without overlap.
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TESTING.md's headline read "11,741 passed + 26 stress, 173 skipped". The three numbers are disjoint and do sum to the collected total, but two of them name a pytest *disposition* and the middle one names a *marker*, which invites reading the 26 as stress tests that passed — and on that reading the sentence's arithmetic is wrong. It is now "26 stress-deselected", so every bucket names a disposition and the sum reads as the partition it is. The compound rather than a plain "deselected" because the reason is worth keeping: the 26 are deselected by `addopts = "-m 'not stress'"`, and a reader reconciling the line against their own `pytest tests/` sees "26 deselected" and now knows which 26 without going to §Stress Tests to find out. The phrase was not the repo-wide convention it looked like. Across the tracked tree it had exactly one live citation — this line — plus the oracle that parses it; it appears in neither CHANGELOG nor HISTORY, so no immutable record is touched. Swept together: the citation, the `_TESTS_BREAKDOWN` pattern, both of `check_tests_breakdown`'s messages, two docstrings, and the fixture builder in the tests. The negative fixture that proves the matches-nothing guard fires keeps its own deliberately different wording. The gate is unchanged in strength and still discriminating: each of the three figures moved by one goes red on its own, and the old wording is now caught by the matches-nothing guard rather than passing silently. Co-Authored-By: Claude <noreply@anthropic.invalid>
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#1288
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v0.1.12 burndown, group G: the release + spec-drift tooling pair — #1288 and #1290 — plus five gate riders. (Close keywords ride the commit; the issues close at the release PR's merge to
main.)#1288 — fit-or-condense release notes
scripts/release.pygainsChangelogSection/changelog_section/changelog_anchor/condense_notes/release_body, andrelease.ymlpasses--repoto the notes step. RED first: 14 failures before the code existed. The strongest evidence is a differential, not a fixture: run against v0.1.10's real 147,918-character CHANGELOG section, the generated index reproduces the hand-made released body's 73/73 index lines byte for byte — and the rule that makes it match is the bullet's last[#N](url)link (first-link scores 47/73, immediate-link 16/73), pinned by a test. A real-artefact test walks every version section in the shipped CHANGELOG, asserting each fits and that0.1.10is among those condensed — without that second assertion the test passes with the limit check deleted.#1290 — the alignment gate grows the classes the issue said it cannot see
Both live drift items were verified live at the base before anything moved (the typed-hole
"?"absent from spec/10's terminals;BLOCK_COMMENTpublished in the spec with no counterpart ingrammar.lark). The gate gained three checks: a terminal audit in both directions within each file, a cross-file regex-terminal pattern comparison (after unescaping Lark's\/and\"— semantics-preserving, and the entire difference between the two files'STRING_LIT), and a production-body comparison over the 80 shared rules with Lark's quoted literals mapped through the chapter's own 65-entry terminal table. Against the unfixed files it went RED on exactly four things: the two known items plus two new production-body finds —slot_ref/result_ref(the spec published a refinement-typed slot ref as legal where the compiler parse-errors citing Chapter 10) andeffect_list's ambiguous second alternative (the same redundancy #1279 removed fromstatement) — both confirmed against the compiler before fixing, with zero new waivers (allowlist 6, cap 7).The five riders
[#N](…/issues/N)with matching number, no duplicates,No known bugs.for empty); tracker parity behind--check-bug-issues, because a pre-commit hook must not make a network call and mid-burndown the table and tracker legitimately disagree — documented in RELEASING.md's release-PR checklist and CLAUDE.md.-rsrun, two arithmetic closures the individual figures cannot make; a skip reason matching none of the documented properties fails rather than being folded in.FileIO/Timeare not effects, so the row alone cannot discriminate), with declared names validated against the live registry.scripts/check_corpus_differential.py— L's review instrument promoted to a script: 0 movers at the current base over the full corpus; falsified against v0.1.9 (exit 1 with real movers), and a test asserts its absence from.pre-commit-config.yaml— it is an instrument, not a hook.check_readmepatterns matched no README text at all and returned silently — replaced by one live check.Review shape (lean protocol, stated honestly)
No full adversarial round under the burndown's budget ruling: the RED-first evidence and per-item mutation tables are in the record comment, the coordinator spot-verified the rebased head's gates directly, and CodeRabbit reviews as the independent second reader on this PR.
Measured on the union (rebase across six integration merges)
Full suite once: 11,708 passed / 173 skipped / 26 deselected, summing to the 11,907 collected exactly. Conformance 244/244; corpus canonical 293; doc counts oracle-consistent (11,907 tests / 175 files); manifest verified untouched (244, diff-empty over
tests/conformance/). All eight of its own gates green on the union tree they will police — including the corpus differential's falsification cell staying RED (51 movers vs v0.1.9; +6 from the six merges, so the cell tracks reality) and the release-notes real-artefact suite passing with two sections now condensing. Structural both-worlds check exact: the files differing from the base are the branch's 22-file inventory, both directions empty. The rebase caught and reversed acheckout --oursthat would have silently discarded five TESTING edits, and re-ran by hand — against the committed tree — every hook the amend's path filters skipped.Merges into
release/v0.1.12on convergence per the burndown's granted authority.Summary by CodeRabbit
Documentation
Improvements
Bug Fixes