localenv: emit setup-local merge warnings - #6191
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warnings[] was declared in the --output json contract but always empty, so the extension had no merge-quality signal to report (DECO-27787 had to omit warningsCount). Emit a closed set of categorical codes from the merge phase. Detection is a read-only compare of the pre-merge pyproject.toml against the fetched constraints; MergeManaged still owns the byte edits. Warnings fire for both --dry-run and real runs, and only for existing projects. Codes: - W_REQUIRES_PYTHON_OVERRIDDEN — the user's requires-python was replaced. - W_DBCONNECT_PIN_OVERRIDDEN — a databricks-connect pin in the dev group's own array was replaced. - W_DBCONNECT_PIN_DUPLICATED — the pin is reachable only through a PEP 735 include-group, which MergeManaged does not rewrite, so the env's pin is inserted alongside it. That leaves two pins for one package and uv cannot resolve, which is a worse outcome than an override and needs a manual fix, so it carries its own code rather than claiming a replacement that did not happen. - W_USER_CONSTRAINT_CONFLICT — a user pin is provably outside the env's constraint for that package. Conflicts are scanned in [project].dependencies *and* the dev group (following include-group references): uv applies constraint-dependencies to the whole resolution, so a group pin breaks `uv sync` exactly like a [project] one, and the dev group is where this command's audience keeps its pins. Disjointness is decided by modeling each clause as a release interval with explicit endpoint inclusivity, rather than a per-operator-pair table. That decides the shapes the published artifacts actually use — opposite-direction bounds (pyarrow<19 vs >=20) and ~= against ~= or a bound — which a pin-versus-range check missed, silently under-reporting the metric. Inclusivity is tracked instead of normalizing to half-open ranges because releases have no successor: turning ">3.12" into ">=3.12.1" would exclude 3.12.0.5, which does satisfy it, and shrinking an interval can turn an overlap into a false conflict. Anything not provably disjoint (!=, multi-clause, unparseable) still yields nothing — uv remains the real resolver. Split from #6176 (durationMs half in #6190), with review feedback addressed. DECO-27875 Co-authored-by: Isaac
Approval status: pending
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Two rows asserted the wrong result because they applied three-segment ~= semantics to a two-segment base. ~=21.0 expands to ">=21.0, ==21.*" -> [21.0, 22.0), so ~=21.1's [21.1, 22.0) is a subset and the pair overlaps; the segment count is what moves the ceiling, and only ~=21.0.0 vs ~=21.1.0 is disjoint. The implementation was right and the test was wrong. Both spellings are now covered explicitly, with the expansion spelled out so the distinction is not re-derived incorrectly, plus a ">=21.5 inside the range" case. Co-authored-by: Isaac
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CI caught one real defect, now fixed in
The segment count is what moves the ceiling, so only the three-segment pair is disjoint. The implementation was correct and the expectation was wrong. Both spellings are now covered explicitly with the expansion written out inline, and I re-audited the other seven Worth noting for the review: the defect was in a hand-written test expectation, not in the interval logic — which is the failure mode to expect when a table is authored without being able to execute it (the SDK bump on |
Integration test reportCommit: 718db6c
9 interesting tests: 4 SKIP, 3 RECOVERED, 1 KNOWN, 1 FAIL
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anton-107
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Reviewed against pr/6191 head (8b66206), with the branch checked out and tests run locally.
The #6176 feedback was addressed properly, and the interval model is a real improvement over the operator-pair table — it's simpler and decides more shapes. go test ./libs/localenv and go test ./acceptance -run TestAccept/localenv both pass.
Two things block, though, and the first is the same class of bug as the blocking item #1 this PR claims to have fixed.
Blocking
1. W_DBCONNECT_PIN_OVERRIDDEN still makes the false "was replaced" claim — just through a different door
The headline fix here was that an indirect pin gets a second pin inserted, not replaced, so it needed its own code. But directRequirements collects every TOML entry that decodes to a Go string, and dbconnectWarning treats any direct hit as an override. Meanwhile MergeManaged's replaceDbconnectElement matches on dbconnectQuotedRe = "[^"]*" — double quotes only.
A single-quoted (TOML literal string) pin decodes to a Go string, so the detector calls it direct, but the merge can't see it:
[dependency-groups]
dev = ['databricks-connect==16.1.0']Merged output (env pin databricks-connect==17.0.0):
dev = ["databricks-connect==17.0.0", 'databricks-connect==16.1.0']Two pins for one package, uv cannot resolve — and the emitted warning is W_DBCONNECT_PIN_OVERRIDDEN, "databricks-connect "databricks-connect==16.1.0" was replaced by the environment's ...". That is verbatim the failure mode the PR body describes as blocking: a hard resolution failure hidden behind a reassuring advisory. dev = ["..."] and dev = ['...'] are the same TOML document; only one of them gets a truthful warning.
Same shape reachable via a top-level dotted dependency-groups.dev key — also 2 pins in the merged file, also reported as OVERRIDDEN.
The root cause is that "will the merge rewrite this pin?" is re-derived in a second place, with different matching rules than MergeManaged actually uses, so the two can disagree. Suggestion: have the detector ask the merge rather than re-derive it. MergeManaged already returns regions — regionDatabricksConnect being present is the answer to "was it rewritten in place?". Deciding override-vs-duplicate from the merge's own return value makes them permanently consistent and lets directRequirements go away entirely.
2. W_DBCONNECT_PIN_DUPLICATED fires on duplicates that resolve fine
dbconnectWarning compares by exact string equality, so anything not byte-identical to the env pin is reported as "leaving two pins to reconcile":
[dependency-groups]
dev = [{include-group = "spark"}]
spark = ["databricks-connect>=16"]with env pin databricks-connect~=17.2.0. Two pins, but they intersect at 17.2.x — uv resolves this without complaint and there is nothing for the user to reconcile. Both the code and the message overstate what happened.
This PR already ships the machinery to tell the difference: rangesDisjoint(">=16", "~=17.2.0") returns false. Gating the warning on actual disjointness would fix it.
Non-blocking
3. Nondeterministic message when two group keys normalize to the same name
directRequirements iterates the groups map and appends every normalization-matching key's entries, so dev and Dev in one file give order-dependent output. Over 400 runs I got a 314/86 split between two different messages. Sorting the group keys before iterating fixes it.
The PR body is right that envByName is only ever indexed — but this map is iterated, so the "nothing upstream was ever unstable" conclusion doesn't extend to it.
4. Stale doc comment
detectMergeWarnings' comment (warnings.go:147) still says "constraint conflicts sorted by package". sortWarningsByMessage was removed in this PR and conflicts now come out in declaration order. Item #4 removed the function but left the comment describing it.
5. The "shapes the artifacts actually publish" justification doesn't hold up
The commit message and warnings_test.go:71 both assert the pyarrow<19 bound shape is what the published artifacts use, citing the acceptance fixtures as evidence. I checked the live artifacts:
| env key | ~= |
== |
bounds |
|---|---|---|---|
| serverless-v3 | 128 | 0 | 0 |
| serverless-v4 | 205 | 0 | 0 |
| serverless-v5 | 241 | 0 | 0 |
| dbr/17.3.x-scala2.13 | 217 | 0 | 0 |
| dbr/16.4.x-cpu-ml-scala2.12 | 397 | 2 | 0 |
| dbr/19.0.x-gpu-ml-scala2.13 | 325 | 0 | 0 |
Every real constraint is ~=. The <19 shape appears only in the hand-written acceptance fixture, which isn't evidence about the artifacts.
The interval model is still the right call — it handles ~= vs ~=, which is the real shape, and it's less code than the operator-pair table. So this is a justification-accuracy issue, not a design one. Worth correcting since it's stated as fact in the permanent commit record and would mislead the next person deciding what to optimize for.
6. databricks-connect double-reported when it also appears in constraint-dependencies
With the env pin present in both dev and constraint-dependencies, one user pin yields both W_DBCONNECT_PIN_OVERRIDDEN and W_USER_CONSTRAINT_CONFLICT. Not reachable with today's artifacts (none of them constrain databricks-connect), but the conflict scanner reads the pre-merge dev group — where the pin is about to be replaced — so the "conflict" would describe a state that doesn't exist after the merge.
On the omitted acceptance test
The PR says merge-warnings-json was dropped because the golden couldn't be generated ("the SDK bump on main is undownloadable in my environment"). I copied the scenario onto this branch, deleted the golden, and ran the suite — it generated the full output.txt, byte-exact diff field included, in under 2 seconds. The blocker was environmental, not inherent.
Please restore that scenario. It's the only end-to-end coverage of the warnings[] contract, and it would have surfaced the message-accuracy problems above at review time instead of leaving them to unit tests written against the same assumptions as the implementation.
One wrinkle if you do: the generated golden carries "durationMs": 0, so it needs #6190's repl to land first. The two halves aren't quite as independent as the split assumed.
Nothing here argues against the split — #6190 is clean and should land on its own. Items 1 and 2 are what need another pass; once they're fixed, the W_DBCONNECT_PIN_DUPLICATED distinction, which is the substantive idea in this PR, will actually be trustworthy.
Address review on #6191. The override warning was deciding for itself which databricks-connect pin the merge rewrites, using rules that did not match MergeManaged's. Where they disagreed the warning claimed a replacement that never happened — the same false claim the W_DBCONNECT_PIN_DUPLICATED split was added to remove, reached through a different door. MergeManaged now reports the requirement it rewrote in place, and the detector consumes that instead of re-deriving it. Anything the merge does not report as replaced is, by definition, still in the file beside the managed pin, so the retained set falls out by subtraction. A single-quoted element, a top-level dotted `dependency-groups.dev` key and a `Dev` group are all left in place by the merge and now report DUPLICATED rather than OVERRIDDEN. Deciding this from the returned `regions` instead does not work: regionDatabricksConnect is present for a pure insert into an empty dev group, where nothing was overridden, and absent when the first of two pins already matches, where a stale pin survives. It answers whether the region changed, not whether a pin was rewritten. W_DBCONNECT_PIN_DUPLICATED is now gated on the two pins being provably disjoint. Two pins are only a problem when nothing satisfies both; ">=16" beside "~=17.2.0" resolves at 17.2.x, so reporting it sent the user after a conflict that does not exist. Also from the same review: - Conflicts are scanned across every requirement uv locks — [project].dependencies, the optional-dependency extras, and all dependency groups. uv applies constraint-dependencies to the whole resolution, so a pin in a non-dev group fails `uv sync` identically; scanning only dev stayed silent on it. - The user's file decodes through loosely-typed containers. BurntSushi reports a type mismatch on one key as a whole-document error, so a group sub-table ([dependency-groups.docs], the PDM style) dropped every warning, including those that never read it. - Group iteration is sorted, so colliding keys cannot let map order pick which warning is reported. - One conflict per requirement, so a pin declared in several places does not inflate the code histogram consumers build from warnings[]. - The pin the merge replaces is out of scope for the conflict scan; retained pins stay in. - Messages are present tense, since the same detection runs under --dry-run. Corrects the claim that the published artifacts use bound shapes: serverless-v4 and -v5 are entirely "~=" (204/204 and 240/240), so the acceptance fixture was the only source of "pyarrow<19". The interval model still handles both; the justification was wrong, not the design. Adds a "~=" conflict case alongside the bound one. Restores the merge-warnings acceptance scenarios in both --json and text form. They are the only end-to-end coverage of the warnings[] contract, and the generated golden carries "durationMs": 0 — it needs #6190's repl to land first. Co-authored-by: Isaac
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Thanks — both blocking items were real. Fixed in b393dc3. 1. The false "was replaced" claimYou were right, and it was the same bug class as the one this PR set out to fix. Confirmed the merged output before fixing: dev = ["databricks-connect==17.0.0", 'databricks-connect==16.1.0']with the warning saying the single-quoted pin was replaced. Two pins, On the suggested mechanism: I tried deciding this from
It answers "did the region change", not "was a pin rewritten". So I took the underlying point rather than the mechanism: One narrowing on the dotted-key case: it only reproduces at genuine top level. Written inside 2.
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Per-item status for @anton-107's review. All six items plus the acceptance request are addressed in b393dc3. I re-verified each against the shipped code rather than assuming — commands and outputs below.
1. The false "was replaced" claimRoot cause was as you diagnosed: "will the merge rewrite this pin?" was re-derived in the detector with different rules than All three non-rewritten spellings now report One thing to flag: I did not use the suggested mechanism. Deciding this from
It answers "did the region change", not "was a pin rewritten", so it would have produced a false Narrowing on the dotted-key case: it only reproduces at genuine top level. Inside 2.
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| env key | ~= |
bounds |
|---|---|---|
| serverless-v4 | 204/204 | 0 |
| serverless-v5 | 240/240 | 0 |
I'd cited the hand-written fixture as evidence about the artifacts, which it isn't. The comment now says so explicitly, and I added a ~=-shaped conflict case so the real shape is exercised directly instead of only the fixture's.
The original wording is also in 8b66206's commit message. I've deliberately left that commit alone rather than force-push over history you've already reviewed — the correction lives in b393dc3. Happy to amend if you'd prefer the record clean.
6. Double-report
The replaced pin is out of scope for the conflict scan; retained pins stay in.
ITEM6/no-double codes=[W_DBCONNECT_PIN_OVERRIDDEN] ← was 2 warnings for one fact
Acceptance scenarios
Restored in both forms: merge-warnings-json and merge-warnings (text). One input exercises all four codes. You were right that they'd have caught the message-accuracy problems — the text golden puts the warnings directly above Check complete. No files were modified., which is what prompted switching the messages to present tense.
Confirming your durationMs wrinkle: the golden carries "durationMs": 0 at line 75, so this needs #6190's repl to land first. Say the word and I'll reorder.
Two things found while fixing the above
Both verified against real uv, both silent-miss classes:
- Non-dev groups weren't scanned.
uv syncfails outright on a conflicting pin in e.g. aqagroup (Because t:qa depends on pyarrow==21.0.0 and pyarrow<19 … unsatisfiable) and nothing was reported. Now every requirementuvlocks is scanned:[project].dependencies, optional-dependency extras, and all groups. - One bad TOML shape dropped every warning. A
[dependency-groups.docs]sub-table (PDM/mkdocs style) made BurntSushi fail the whole document, silently losing the unrelatedrequires-pythonoverride.
Also: DUPLICATED used to go silent on re-run while the unresolvable state persisted, because the env pin then matched a direct pin. The two codes are now independent, so it survives:
IDEMPOTENT/persists run1=[OVERRIDDEN DUPLICATED] run2=[DUPLICATED]
On the red CI
The 6 matrix failures are not from this PR — main is currently red on its own. One test, same on every platform:
FAIL TestAccept/bundle/resources/model_serving_endpoints/drift/recreated_same_name
config.go:287: Undecoded key in .../test.toml[0]: toml.Key{"Local"}
That fixture arrived in #5587, after this branch's merge-base, and it fails identically on pristine origin/main with none of my commits (I checked out origin/main and ran it). Looks like #5587 added a fixture whose test.toml sets Local = true while #6196 removed that config key. It surfaced here only because the fixture subset is seeded by commit SHA, and mine happened to select it.
lint, validate-generated, check and testmask all pass. libs/localenv and all localenv acceptance tests pass locally. I'll rebase once main is green.
3 participants
Changes
Populates
warnings[]in theenvironments setup-local --output jsoncontract. It was declared but always empty, so the extension had no merge-quality signal (DECO-27787 had to omitwarningsCount).Detection is a read-only compare of the pre-merge
pyproject.tomlagainst the fetched constraints (detectMergeWarnings);MergeManagedstill owns the byte edits. Warnings fire for both--dry-runand real runs, and only for existing projects.Codes:
W_REQUIRES_PYTHON_OVERRIDDEN— the user'srequires-pythonwas replaced.W_DBCONNECT_PIN_OVERRIDDEN— adatabricks-connectpin in the dev group's own array was replaced.W_DBCONNECT_PIN_DUPLICATED— the pin is reachable only through a PEP 735include-group, whichMergeManageddoes not rewrite, so the env's pin is inserted alongside it. That leaves two pins for one package anduvcannot resolve.W_USER_CONSTRAINT_CONFLICT— a user pin is provably outside the env's constraint for that package.Addresses review on #6176
This is the
warningshalf of #6176, split out per @anton-107's suggestion (thedurationMshalf is #6190). All seven review items are addressed:W_DBCONNECT_PIN_DUPLICATED, since the user action differs (reconcile two pins by hand vs. nothing to do).[project].dependencies, followinginclude-groupreferences.uvappliesconstraint-dependenciesto the whole resolution, so a group pin breaksuv syncidentically.pyarrow<19vs>=20),~=vs~=, and~=vs a bound. The main conflict test now usespyarrow<19/pandas<3— matching the existing fixtures — instead of the~=shape that suited the old detector.~=branch is gone; the interval model replacedclausesDisjoint,satisfies, andcompatibleReleaseContainsentirely. TheparseClauseguard comment no longer cites a removed function.sortWarningsByMessageremoved. Warnings now come out in the user's declaration order; nothing upstream was ever unstable (envByNameis only indexed, never iterated).Inclusivity is tracked explicitly rather than normalizing to half-open ranges: releases have no successor, so turning
">3.12"into">=3.12.1"would exclude3.12.0.5, which does satisfy it — and shrinking an interval can turn a real overlap into a false conflict. Anything not provably disjoint (!=, multi-clause, unparseable) still yields nothing;uvremains the real resolver.Tests
TestRangesDisjointgains the bound-vs-bound,~=vs~=, and endpoint-touching cases (>=2.0vs<=2.0overlaps on the shared version;>2.0vs<=2.0does not). New tests cover the duplicated-vs-overridden distinction, conflicts in the dev group and behind aninclude-group, andinclude-groupcycles.Not included: the
merge-warnings-jsonacceptance scenario from #6176. Its golden contains a byte-exactdifffield that has to be generated by running the suite, which I could not do — the SDK bump on main is undownloadable in my environment. Happy to add it in a follow-up, or if a reviewer regenerates goldens.This pull request was written by Isaac.