[release/10.0.3xx] Source code updates from dotnet/fsharp

[dotnet-maestro]

Note

This is a codeflow update. It may contain both source code changes from
the source repo
as well as dependency updates. Learn more here.

This pull request brings the following source code changes

From https://github.com/dotnet/fsharp

• Subscription: a3c743a8-612f-4466-b6ab-4d4be782a07b
• Build: 20260326.1 (307874)
• Date Produced: March 26, 2026 2:41:49 PM UTC
• Commit: 880dda8e783fc9c30dcf35f9c8546b2651fd51af
• Commit Diff: 20aa5a4...880dda8
• Branch: main

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/fsharp:880dda8e783fc9c30dcf35f9c8546b2651fd51af..https://github.com/dotnet/dotnet:darc-release/10.0.3xx-d277fd7c-251c-4595-bd53-bcc4a45ecff6

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Use union merge strategy for release notes to avoid conflicts fsharp#19420
• [main] Update dependencies from dotnet/roslyn fsharp#19411

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Bugfix :: Sequence points  fsharp#19278

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• [main] Update dependencies from dotnet/roslyn fsharp#19431
• [main] Update dependencies from dotnet/msbuild fsharp#19430
• Fix flaky tests and add flaky-test-detector skill fsharp#19427
• Add limited repo assist to identify very old issues that are already fixed fsharp#19436

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• [main] Update dependencies from dotnet/roslyn fsharp#19431
• [main] Update dependencies from dotnet/msbuild fsharp#19430
• Fix flaky tests and add flaky-test-detector skill fsharp#19427
• Add limited repo assist to identify very old issues that are already fixed fsharp#19436
• [main] Update dependencies from dotnet/arcade fsharp#19422

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Fix UoM ToString codegen with checknulls fsharp#19440

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Allow repo-assist to create monthly report fsharp#19437
• Fix PublicSign fsharp#19442

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Cache attributes read by compiler— replace repeated string matching with O(1) enum lookups fsharp#19394
• Split CI tests based on namespace fsharp#19354
• Adding Copilot skills+instructions+agent for specialized compiler review (trained on historical feedback here) fsharp#19447
• Copilot reviewer - drop overfitted learnings, turn into generalized rules fsharp#19451
• Update issue label workflow fsharp#19454
• [main] Update dependencies from dotnet/arcade fsharp#19452
• [main] Update dependencies from dotnet/roslyn fsharp#19444
• [main] Update dependencies from dotnet/msbuild fsharp#19443
• Reduce Repo Assist schedule from hourly to 4x daily fsharp#19459
• Add regression test: #14057, Renaming operator with dot only renames right of dot fsharp#19488

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add regression test: #14969, FindReferences for active patterns in .fsi fsharp#19487
• Add regression test: #13194, Completion/tooltip with quote in member name fsharp#19486
• [main] Update dependencies from dotnet/roslyn fsharp#19462
• [main] Update dependencies from dotnet/msbuild fsharp#19461
• Bugfix :: Fix emitted method signatures: outref and static abstract byref params fsharp#19340
• Bugfix :: Fix closure capture and let-rec initialization codegen fsharp#19339
• Add regression test: #6750, Mutually recursive DU values initialization fsharp#19483

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add regression tests: #14308 + #14310, Signature generation improvements fsharp#19490

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add regression test: #16410, no spurious FS3570 with KeyValue active pattern fsharp#19481

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add regression test for #3841: Hash directive indentation in nested module fsharp#19489

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add regression test: #14152, nowarn directive before module declaration fsharp#19477
• Add regression test: #6929, Literal bindings preserve units of measure fsharp#19463

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add regression test: #3660, array of functions invocation correctness fsharp#19479

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Infra: Update gh aw fsharp#19495
• Fix CLIEvent properties to be recognized as events in Symbol API fsharp#18584

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.