Establish the authoritative inventory and Python 3.15 waiting policy #29

Activity

1. stefan-jansen

   added this to the 2026-09-20 - Stable libraries and Skills closure milestone on Sep 21, 2026
2. stefan-jansen

   added

   type: maintenanceInternal maintenance without user-visible behaviorInternal maintenance without user-visible behavior

   priority: highMaterial user impact requiring prompt remediationMaterial user impact requiring prompt remediation

   status: acceptedAccepted for implementationAccepted for implementation

   compatibility: affectedHas Python, platform, dependency, or cross-library compatibility impactHas Python, platform, dependency, or cross-library compatibility impact

   ecosystemTracked by a shared ML4T ecosystem requirementTracked by a shared ML4T ecosystem requirement

   on Sep 21, 2026
3. stefan-jansen commented on Sep 21, 2026

   

   stefan-jansen

   on Sep 21, 2026

   ContributorAuthor

   More actions

   Inventory refreshed at 2026-09-21T00:43:44Z.

   Public queue

   • Stable libraries: Data Reconcile and remediate Diagnostic #37, Live #92, and Diagnostic Cover Data 0.2.0 under the Python 3.15 Polars wait #45 are open. Engineer, Backtest, Specs, and
     Models have no open issues. None of the seven libraries has an open pull request.
   • Skills: issues Track Python 3.15 dependency compatibility #2 and Validate qualification exceptions against the candidate package version #4 and pull request Review retained branches with unique commits #3 are open. Ecosystem issue Resolve the Skills queue and verify API accuracy #39 owns their resolution.
   • Ecosystem: existing trackers Qualify all seven stable libraries against the ecosystem standard #1, Track Python 3.15 dependency compatibility #2, Standardize repository instructions for coding agents #7, and Track owning-library remediation and final qualification #13 remain open. Milestone issues Establish the authoritative inventory and Python 3.15 waiting policy #29 through Publish required patches and close the ecosystem work unit #40
     now carry the shared type, priority, status, compatibility, and ecosystem labels. Draft pull
     request Standardize stable libraries and record closure evidence #41 contains the milestone commits.

   Current evidence

   • The authenticated ecosystem audit passes Data 0.1.7, Engineer 0.1.4, Backtest 0.1.7, Specs 0.1.5,
     Diagnostic 0.1.6.post2, and Models 0.1.4 at their current default-branch commits.
   • Live 0.1.2 remains the only failed ecosystem report. Its source-to-PyPI metadata mismatch and
     missing canonical project URL are part of the pending 0.1.3 release tracked by Live #92 and
     ecosystem Complete Live qualification and reconcile its sidecar #36.
   • All seven local release-checkout and sidecar topology audits pass. Private local issue drafts stay
     private and are assigned to the owning reconciliation issues Reconcile and remediate Data #32 through Reconcile and remediate Models #38.

   Python 3.15 classification

   Decision 0013 in pull request #41 makes Python 3.12 through 3.14 the blocking stable matrix for the
   affected 0.1 release lines. Data and Engineer wait on Python 3.15 final or a Polars release after
   1.44.2. Diagnostic waits on Python 3.15 final or PyArrow 26. Each affected library must keep a
   truthful <3.15 upper bound and run a visible non-blocking canary at least monthly. A review trigger
   requires fresh three-platform evidence but does not block an otherwise qualified stable release.

   Pydantic-core 2.49.0 now publishes CPython 3.15 wheels, so it is no longer listed as a Diagnostic
   blocker. Ecosystem #2, Data #37, and Diagnostic #45 now have normal priority because they track
   upstream readiness rather than a current stable-release failure.
4. stefan-jansen

   closed this as completedin 293400con Sep 21, 2026
5. vkovshov

   added a commit that references this issue on Oct 6, 2026

   Standardize stable libraries and record closure evidence

   ...

   This issue will close once commit 293400c is merged into the 'main' branch.

   293400c