Nightly build 2026.03.12

What's Changed

Toolchain and implementation changes 🛠️

• Map Carbon value expressions to const-qualified C++ prvalues. by @zygoloid in #6880
• Updates the llvm-raw commit to HEAD as of 2026-03-09 by @jonmeow in #6879
• Make {} as Class an initializing expression. by @zygoloid in #6882
• Fix thunk generation for &&-qualified methods. by @zygoloid in #6881
• Introduce a Bazel-integrated build for the installed runtimes by @chandlerc in #6872
• Support calling constexpr functions at compile time by @nicholasbishop in #6878

Documentation changes 📝

• Add "Fixing conflicts with trunk" to code_review.md by @nicholasbishop in #6889

Full Changelog: v0.0.0-0.nightly.2026.03.11...v0.0.0-0.nightly.2026.03.12

Nightly build 2026.03.11

What's Changed

Toolchain and implementation changes 🛠️

• Factor out textual headers from libcxx and libcxxabi by @chandlerc in #6863
• Refactor match parse nodes. by @zygoloid in #6870
• Fix crash in character literal lexing by @primitive0 in #6805
• Remove ValueParamPattern case from deduction by @geoffromer in #6869

New Contributors

• @primitive0 made their first contribution in #6805

Full Changelog: v0.0.0-0.nightly.2026.03.10...v0.0.0-0.nightly.2026.03.11

Nightly build 2026.03.10

What's Changed

Toolchain and implementation changes 🛠️

• Remove InitForm::index by @geoffromer in #6817
• Disallow :? within var by @geoffromer in #6812
• Switch libpfm and boost.unordered to BCR versions by @jonmeow in #6847
• Handle pack expansion for dependent non-type template params by @nicholasbishop in #6850
• Roll LLVM b20d7d02..6811a83c815 by @danakj in #6844
• Support assigning to a struct field through a macro by @nicholasbishop in #6843
• pre-commit autoupdate by @jonmeow in #6845
• Lift builtins build logic into Starlark by @chandlerc in #6859
• Add support for ->? return forms by @geoffromer in #6849
• Support conversion between integer types. by @zygoloid in #6856

Documentation changes 📝

• Add jj and AI notes to contribution tools by @jonmeow in #6841
• Update action versions by @jonmeow in #6848
• Adjust tool usage notes by @jonmeow in #6853

Infrastructure changes 🏗️

• Update bazel module versions by @jonmeow in #6846
• Switch llvm-raw to a git_override rule by @jonmeow in #6854
• Update clangd-tidy endpoint whitelist by @jonmeow in #6855
• Try out wolfd_bazel_compile_commands by @jonmeow in #6851
• Update tool versions in script_utils by @jonmeow in #6852
• Remove obsolete llvm patch by @jonmeow in #6865
• Allow uploads.github.com by @jonmeow in #6866

Full Changelog: v0.0.0-0.nightly.2026.03.06...v0.0.0-0.nightly.2026.03.10

Nightly build 2026.03.06

What's Changed

Toolchain and implementation changes 🛠️

• Support assigning to a variable through an imported macro by @nicholasbishop in #6827
• codifies Carbon specifier and qualifier order by @cjdb in #6831
• Don't run clang to link when fuzzing. by @zygoloid in #6835
• Fix comment to match case of parameter name by @josh11b in #6839

Documentation changes 📝

• Add a GEMINI.md. by @zygoloid in #6838
• More GEMINI.md file work by @jonmeow in #6840
• Switch GEMINI.md to skills by @jonmeow in #6842

Full Changelog: v0.0.0-0.nightly.2026.03.05...v0.0.0-0.nightly.2026.03.06

Nightly build 2026.03.05

What's Changed

Toolchain and implementation changes 🛠️

• Parse invalid lambdas without crashing by @MK4070 in #6826
• refactors PerformCppOverloadResolution to take CppOverloadSet by @cjdb in #6829
• refactors LookupCppImpl to handle multiple associated functions by @cjdb in #6816
• Support CARBON_KIND with Any types by @jonmeow in #6828

New Contributors

• @MK4070 made their first contribution in #6826

Full Changelog: v0.0.0-0.nightly.2026.03.03...v0.0.0-0.nightly.2026.03.05

Nightly build 2026.03.04

What's Changed

Proposals accepted and merged 📜

• C++ Interop: API importing and semantics by @bricknerb in #6358

Toolchain and implementation changes 🛠️

• Support pointer template params by @nicholasbishop in #6810
• Make Destroy.Op functions able to have a body by @jonmeow in #6729
• Dedupe self values in identify facet type by @danakj in #6819
• Refactor TryEvaluateMacroToConstant to simplify and dedup code by @nicholasbishop in #6820
• Remove index fields from ParamPatterns by @geoffromer in #6815
• Support calling functions with explicit template arguments. by @zygoloid in #6814

Utilities 📐

• Bump minimatch from 3.1.3 to 3.1.5 in /utils/vscode in the npm_and_yarn group across 1 directory by @dependabot[bot] in #6818

Full Changelog: v0.0.0-0.nightly.2026.02.28...v0.0.0-0.nightly.2026.03.04

Nightly build 2026.03.03

What's Changed

Proposals accepted and merged 📜

• C++ Interop: API importing and semantics by @bricknerb in #6358

Toolchain and implementation changes 🛠️

• Support pointer template params by @nicholasbishop in #6810
• Make Destroy.Op functions able to have a body by @jonmeow in #6729
• Dedupe self values in identify facet type by @danakj in #6819
• Refactor TryEvaluateMacroToConstant to simplify and dedup code by @nicholasbishop in #6820
• Remove index fields from ParamPatterns by @geoffromer in #6815
• Support calling functions with explicit template arguments. by @zygoloid in #6814

Utilities 📐

• Bump minimatch from 3.1.3 to 3.1.5 in /utils/vscode in the npm_and_yarn group across 1 directory by @dependabot[bot] in #6818

Full Changelog: v0.0.0-0.nightly.2026.02.28...v0.0.0-0.nightly.2026.03.03

Nightly build 2026.03.02

What's Changed

Toolchain and implementation changes 🛠️

• Don't crash if clang setup fails. by @zygoloid in #6804
• Format the InterfaceWithSelf and NamedConstraintWithSelf generic name with its ".WithSelf" suffix by @danakj in #6798
• Mark mangled enclosed entities by @jonmeow in #6809
• Support bool template params by @nicholasbishop in #6808
• Fix issues from #6745 by @geoffromer in #6811

Documentation changes 📝

• Fix syntax errors in docs observe examples by @ozguronsoy in #6813

Full Changelog: v0.0.0-0.nightly.2026.02.27...v0.0.0-0.nightly.2026.03.02

Nightly build 2026.03.01

What's Changed

Toolchain and implementation changes 🛠️

• Don't crash if clang setup fails. by @zygoloid in #6804
• Format the InterfaceWithSelf and NamedConstraintWithSelf generic name with its ".WithSelf" suffix by @danakj in #6798
• Mark mangled enclosed entities by @jonmeow in #6809
• Support bool template params by @nicholasbishop in #6808
• Fix issues from #6745 by @geoffromer in #6811

Documentation changes 📝

• Fix syntax errors in docs observe examples by @ozguronsoy in #6813

Full Changelog: v0.0.0-0.nightly.2026.02.27...v0.0.0-0.nightly.2026.03.01

Nightly build 2026.02.28

What's Changed

Toolchain and implementation changes 🛠️

• Don't crash if clang setup fails. by @zygoloid in #6804
• Format the InterfaceWithSelf and NamedConstraintWithSelf generic name with its ".WithSelf" suffix by @danakj in #6798
• Mark mangled enclosed entities by @jonmeow in #6809
• Support bool template params by @nicholasbishop in #6808
• Fix issues from #6745 by @geoffromer in #6811

Documentation changes 📝

• Fix syntax errors in docs observe examples by @ozguronsoy in #6813

Full Changelog: v0.0.0-0.nightly.2026.02.27...v0.0.0-0.nightly.2026.02.28