[repo-assist] Monthly Activity 2026-09

この issue は、単独の変更要求ではなく、生成された月次の maintainer 活動レポートです。まず、リンクされている issue と pull request、特に #468、#470、#473、#463、#442 を確認し、参照されている TaskSeqInternal.fs と README も確認してください。単一の完了条件はありません。列挙されているメンテナンス作業には、それぞれ個別の判断または実装が必要になります。

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Activity for September 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention:

• Review PR #468: Dependabot bump of github/gh-aw-actions/setup 0.86.2→0.87.10 — View
• Review PR: test: add SideEffects module to ReplicateInfinite and ThreadState test files — created this run
• Apply manually: issue #463 contains a ready patch (Actions version bumps: checkout v7, setup-dotnet v6, cache v6, upload-artifact v7, dorny/test-reporter v3) that Repo Assist could not push directly because it touches protected .github/workflows/*.yaml files — a maintainer needs to download and apply it via the instructions in the issue — View
• Apply manually: issue #442 contains a ready patch (bundled Dependabot Actions updates + SideEffects tests for FoldWhile/Do) blocked for the same protected-workflow-file reason — View
• Investigate #452: Orleans-specific TaskSeq.map/for..yield final-item duplication bug. Root cause narrowed to shared CE/resumable-code machinery, but not reproducible offline — needs a maintainer/contributor with real Orleans dev access to drive further — View
• Check comment on #62: tail recursion discussion — awaiting maintainer direction on whether to pursue stub overloads for TaskSeqBuilder now that upstream YieldFromFinal fix has landed — View
• Triage #466: new feature request for a ValueTaskSeq type (ValueOption/ValueTask-based) from @xperiandri — unlabelled, needs feasibility assessment — View

Future Work for Repo Assist

• Do NOT re-attempt: rev/sort, allPairs, zip4, map3, iteri2, splitInto, exists2, map2, findBack (all rejected/closed)
• Do NOT re-engage on issue #139 (TaskEx index) or #62 (tail recursion) unless new human activity appears
• Confirmed lengthBeforeMax, unfold, unfoldAsync, tryPick, tryFind, tryFindIndex in TaskSeqInternal.fs are early-exit patterns that cannot be converted to the while! idiom (no break in F#'s task/taskSeq CEs) — do not re-attempt this perf conversion
• Test files still without a SideEffects module: TaskSeq.Empty.Tests.fs (has an inline side-effect test but no dedicated module — may not need one), TaskSeq.Let.Tests.fs (binding-focused, may not need one). ReplicateInfinite.Tests.fs and ThreadState.Tests.fs now have one, added this run.
• Protected-file limitation: any engineering task touching .github/workflows/*.yaml cannot be pushed directly by the bot; results in a stranded issue with manual patch instead of a PR (see #463, #442)

Run History

2026-09-04 — Run

• 🔧 Created PR: test: add SideEffects module to TaskSeq.ReplicateInfinite.Tests.fs and TaskSeq.ThreadState.Tests.fs (Task 9, substituted for Task 8 — no viable while! perf conversions remained after verifying the last few early-exit patterns) — build succeeds, full suite 4469 passed / 0 failed
• 🔍 Verified no open issue is fixable under Task 3 criteria (no bug/help wanted/good first issue labelled issues); substituted with test-coverage work
• 📁 Closed #465 (August 2026 monthly activity) and opened this issue for September

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🤖 Repo Assist here — I'm an automated AI assistant for this repository.

Activity for September 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention:

• Review PR #468: Dependabot bump of github/gh-aw-actions/setup 0.86.2→0.87.10 — View
• Review PR: test: add SideEffects module to ReplicateInfinite and ThreadState test files — created 2026-09-04 — View
• Review PR: docs: document known Debug-mode F# compiler bug affecting taskSeq (#473) — created this run
• Apply manually: issue #463 contains a ready patch (Actions version bumps: checkout v7, setup-dotnet v6, cache v6, upload-artifact v7, dorny/test-reporter v3) that Repo Assist could not push directly because it touches protected .github/workflows/*.yaml files — a maintainer needs to download and apply it via the instructions in the issue — View
• Apply manually: issue #442 contains a ready patch (bundled Dependabot Actions updates + SideEffects tests for FoldWhile/Do) blocked for the same protected-workflow-file reason — View
• Investigate #452: Orleans-specific TaskSeq.map/for..yield final-item duplication bug. Root cause narrowed to shared CE/resumable-code machinery, but not reproducible offline — needs a maintainer/contributor with real Orleans dev access to drive further — View
• Check comment on #62: tail recursion discussion — awaiting maintainer direction on whether to pursue stub overloads for TaskSeqBuilder now that upstream YieldFromFinal fix has landed — View
• Triage #466: feature request for a ValueTaskSeq type (ValueOption/ValueTask-based) from @xperiandri — now labelled enhancement/feature request/needs triage; still needs a feasibility decision — View
• Check comment on #473: root-caused a reported bug (taskSeq silently truncates in Debug builds on .NET SDK 10.0.400+) to an upstream F# compiler regression, dotnet/fsharp#20466, with a fix already in progress at dotnet/fsharp#20469 — recommend tracking the upstream PR for closure, no action needed in this repo — View
• Track upstream: dotnet/fsharp#20469 (compiler fix for the Debug-mode state-machine lowering bug affecting taskSeq) — once merged and shipped in an SDK, #473 can be closed — View

Future Work for Repo Assist

• Do NOT re-attempt: rev/sort, allPairs, zip4, map3, iteri2, splitInto, exists2, map2, findBack (all rejected/closed)
• Do NOT re-engage on issue #139 (TaskEx index) or #62 (tail recursion) unless new human activity appears
• Confirmed lengthBeforeMax, unfold, unfoldAsync, tryPick, tryFind, tryFindIndex in TaskSeqInternal.fs are early-exit patterns that cannot be converted to the while! idiom (no break in F#'s task/taskSeq CEs) — do not re-attempt this perf conversion
• Test files still without a SideEffects module: TaskSeq.Empty.Tests.fs (has an inline side-effect test but no dedicated module — may not need one), TaskSeq.Let.Tests.fs (binding-focused, may not need one)
• Protected-file limitation: any engineering task touching .github/workflows/*.yaml cannot be pushed directly by the bot; results in a stranded issue with manual patch instead of a PR (see #463, #442)
• Watch dotnet/fsharp#20469 for merge/release; once shipped in an SDK, close out #473 with a comment confirming the fix and remove the "Known issues" note from README once the fixed SDK is broadly available

Run History

2026-09-11 13:45 UTC — Run

• 🏷️ Labelled #473 with bug, compatibility, blocked: awaiting-fsharp-feature
• 🏷️ Labelled #466 with enhancement, feature request, needs triage
• 🏷️ Labelled #452 with bug, needs investigation, compatibility
• 💬 Commented on #473: reproduced the reported Debug-mode taskSeq truncation locally, root-caused it to an upstream F# compiler regression (dotnet/fsharp#20466), and pointed to the in-progress fix (dotnet/fsharp#20469) plus a Release-build workaround
• 🔧 Created PR: docs: document known Debug-mode F# compiler bug affecting taskSeq (#473) — README "Known issues" section + release-notes entry

2026-09-04 — Run

• 🔧 Created PR: test: add SideEffects module to TaskSeq.ReplicateInfinite.Tests.fs and TaskSeq.ThreadState.Tests.fs (Task 9, substituted for Task 8 — no viable while! perf conversions remained after verifying the last few early-exit patterns) — build succeeds, full suite 4469 passed / 0 failed
• 🔍 Verified no open issue is fixable under Task 3 criteria (no bug/help wanted/good first issue labelled issues); substituted with test-coverage work
• 📁 Closed #465 (August 2026 monthly activity) and opened this issue for September

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🤖 Repo Assist here — I'm an automated AI assistant for this repository.

Activity for September 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention:

• Review PR #480: Dependabot bump of github/gh-aw-actions/setup 0.88.8→0.89.15 — Review
• Review PR #470: test: add SideEffects module to ReplicateInfinite and ThreadState test files — Review
• Review PR: docs: Known Issues section for Debug-mode compiler bug affecting taskSeq (#473) — created this run
• Apply manually: issue #463 contains a ready patch (Actions version bumps) blocked by protected .github/workflows/*.yaml files — a maintainer needs to apply it manually per the issue's instructions — View
• Apply manually: issue #442 contains a ready patch (bundled Dependabot Actions updates + SideEffects tests) blocked for the same protected-workflow-file reason — View
• Check comment on #452: confirmed the newly-reported Debug-mode test failures (from @majocha) are the same upstream compiler regression as #473 (dotnet/fsharp#20466), not a new Orleans-specific bug — reproduced locally with SDK 10.0.400 in Debug. The original Orleans "duplicated final item" symptom remains open and still needs a maintainer/contributor with real Orleans access to progress — View
• Check comment on #62: tail recursion discussion — awaiting maintainer direction on whether to pursue YieldFromFinal stub overloads now that the upstream compiler fix has landed — View
• Triage #466: feature request for a ValueTaskSeq type (ValueOption/ValueTask-based) from @xperiandri — labelled enhancement/needs triage; still needs a feasibility decision — View
• Track upstream: dotnet/fsharp#20469 (compiler fix for the Debug-mode state-machine lowering bug affecting taskSeq) — once merged and shipped in an SDK, #473 can be closed and the README "Known issues" note removed — View

Future Work for Repo Assist

• Do NOT re-attempt: rev/sort, allPairs, zip4, map3, iteri2, splitInto, exists2, map2, findBack (all rejected/closed)
• Do NOT re-engage on issue #139 (TaskEx index) or #62 (tail recursion) unless new human activity appears
• Confirmed lengthBeforeMax, unfold, unfoldAsync, tryPick, tryFind, tryFindIndex in TaskSeqInternal.fs are early-exit patterns that cannot be converted to the while! idiom — do not re-attempt this perf conversion
• Protected-file limitation: any engineering task touching .github/workflows/*.yaml cannot be pushed directly by the bot; results in a stranded issue with manual patch instead of a PR (see #463, #442)
• Watch dotnet/fsharp#20469 for merge/release; once shipped in an SDK, close out #473 and #452's Debug-mode angle with a confirming comment, and remove the "Known issues" README note once the fixed SDK is broadly available
• #452's original Orleans-specific duplication (distinct from the now-confirmed Debug/compiler-bug symptom) still needs a real Orleans repro environment to progress further

Run History

2026-09-18 13:46 UTC — Run

• 🔧 Created PR: docs: add Known Issues section for Debug-mode compiler bug affecting taskSeq (#473) — the earlier attempt (issue #476) had been blocked by a false-positive protected-files check on README.md, which resolved cleanly this run
• 💬 Commented on #476 noting the new PR supersedes the manual-patch instructions
• 💬 Commented on #452: reproduced @majocha's Debug-mode test failure locally with SDK 10.0.400, confirmed it is the same upstream compiler regression as #473 (not a new Orleans-specific bug), and clarified the original Orleans duplication question remains separately open

2026-09-11 13:45 UTC — Run

• 🏷️ Labelled #473 with bug, compatibility, blocked: awaiting-fsharp-feature
• 🏷️ Labelled #466 with enhancement, feature request, needs triage
• 🏷️ Labelled #452 with bug, needs investigation, compatibility
• 💬 Commented on #473: reproduced the reported Debug-mode taskSeq truncation locally, root-caused it to an upstream F# compiler regression (dotnet/fsharp#20466), and pointed to the in-progress fix (dotnet/fsharp#20469) plus a Release-build workaround

2026-09-04 — Run

• 🔧 Created PR: test: add SideEffects module to TaskSeq.ReplicateInfinite.Tests.fs and TaskSeq.ThreadState.Tests.fs — build succeeds, full suite 4469 passed / 0 failed
• 📁 Closed #465 (August 2026 monthly activity) and opened this issue for September

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Activity for September 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention:

• Review PR #483: Dependabot bump of github/gh-aw-actions/setup 0.88.8→0.89.17 — Review
• Review PR #481: docs: document known Debug-mode F# compiler bug affecting taskSeq (#473) — Review
• Review PR #470: test: add SideEffects module to ReplicateInfinite and ThreadState test files — Review
• Review PR: tests: add coverage for ValueTask helper module (fromResult/ofSource/ofTask/ignore/True/False + deprecated aliases) — created this run
• Apply manually: issue #463 contains a ready patch (Actions version bumps: checkout v7, setup-dotnet v6, cache v6, upload-artifact v7, dorny/test-reporter v3) blocked by protected .github/workflows/*.yaml files — View
• Apply manually: issue #442 contains a ready patch (bundled Dependabot Actions updates + SideEffects tests for FoldWhile/Do) blocked for the same protected-workflow-file reason — View
• Check comment on #473: confirmed the upstream compiler fix (dotnet/fsharp#20469) merged 2026-09-14 but has not yet shipped in any released SDK (still reproduces on newest available SDK 10.0.401) — View
• Investigate #452: Orleans-specific TaskSeq.map/for..yield final-item duplication remains unconfirmed outside real Orleans grain scheduling; needs a maintainer/contributor with Orleans dev access — View
• Check comment on #62: tail recursion discussion — awaiting maintainer direction on whether to pursue YieldFromFinal stub overloads — View
• Triage #466: feature request for a ValueTaskSeq type (ValueOption/ValueTask-based) from @xperiandri — labelled enhancement/needs triage; still needs a feasibility decision — View
• Track upstream: dotnet/fsharp#20469 has merged but not yet shipped in an SDK — once it ships, close #473, update #452's Debug-mode note, and remove the README "Known issues" section — View

Future Work for Repo Assist

• Do NOT re-attempt: rev/sort, allPairs, zip4, map3, iteri2, splitInto, exists2, map2, findBack (all rejected/closed)
• Do NOT re-engage on issue #139 (TaskEx index) or #62 (tail recursion) unless new human activity appears
• Confirmed lengthBeforeMax, unfold, unfoldAsync, tryPick, tryFind, tryFindIndex in TaskSeqInternal.fs are early-exit patterns that cannot be converted to the while! idiom — do not re-attempt this perf conversion
• Protected-file limitation: any engineering task touching .github/workflows/*.yaml cannot be pushed directly by the bot; results in a stranded issue with a manual patch instead of a PR (see #463, #442)
• Each run, re-check dotnet --list-sdks for a newer SDK and re-run TaskSeq.Issue452.Tests.fs in Debug against it — once it passes, close #473 and #452's Debug-mode angle, and remove the README note
• #452's original Orleans-specific duplication (distinct from the confirmed Debug/compiler-bug symptom) still needs a real Orleans repro environment to progress further

Run History

2026-09-25 14:12 UTC — Run

• 🔧 Created PR: tests: add coverage for ValueTask helper module (fromResult, ofSource, ofTask, ignore, True/False, deprecated aliases) — no dedicated tests previously existed for this module despite Task/Async equivalents being covered; full suite 5446 passed / 0 failed
• 💬 Commented on #473: verified dotnet/fsharp#20469 merged 2026-09-14 but confirmed (by testing against the newest available SDK, 10.0.401) that the fix has not yet shipped in a released SDK; the truncation bug still reproduces

2026-09-18 13:46 UTC — Run

• 🔧 Created PR #481: docs: add Known Issues section for Debug-mode compiler bug affecting taskSeq (#473) — the earlier attempt (issue #476) had been blocked by a false-positive protected-files check on README.md, which resolved cleanly this run
• 💬 Commented on #476 noting the new PR supersedes the manual-patch instructions
• 💬 Commented on #452: reproduced @majocha's Debug-mode test failure locally with SDK 10.0.400, confirmed it is the same upstream compiler regression as #473 (not a new Orleans-specific bug), and clarified the original Orleans duplication question remains separately open

2026-09-11 13:45 UTC — Run

• 🏷️ Labelled #473 with bug, compatibility, blocked: awaiting-fsharp-feature
• 🏷️ Labelled #466 with enhancement, feature request, needs triage
• 🏷️ Labelled #452 with bug, needs investigation, compatibility
• 💬 Commented on #473: reproduced the reported Debug-mode taskSeq truncation locally, root-caused it to an upstream F# compiler regression (dotnet/fsharp#20466), and pointed to the in-progress fix (dotnet/fsharp#20469) plus a Release-build workaround

2026-09-04 — Run

• 🔧 Created PR #470: test: add SideEffects module to TaskSeq.ReplicateInfinite.Tests.fs and TaskSeq.ThreadState.Tests.fs — build succeeds, full suite 4469 passed / 0 failed
• 📁 Closed #465 (August 2026 monthly activity) and opened this issue for September

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