[Backport 2.32-maintenance] nix-2.32 needs boost-1.87+ for try_emplace_and_cvisit#14371
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internal-nix-ci[bot] merged 1 commit into2.32-maintenancefrom Oct 27, 2025
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Since 2.32, nix now needs boost 1.87 or later to build,
due to using unordered::concurrent_flat_map try_emplace_and_cvisit
../src/libexpr/eval.cc: In member function ‘void nix::EvalState::evalFile(const nix::SourcePath&, nix::Value&, bool)’:
../src/libexpr/eval.cc:1096:20: error: ‘class boost::unordered::concurrent_flat_map<nix::SourcePath, nix::Value*, std::hash<nix::SourcePath>, std::equal_to<nix::SourcePath>, traceable_allocator<std::pair<const nix::SourcePath, nix::Value*> > >’ has no member named ‘try_emplace_and_cvisit’; did you mean ‘try_emplace_or_cvisit’?
1096 | fileEvalCache->try_emplace_and_cvisit(
| ^~~~~~~~~~~~~~~~~~~~~~
| try_emplace_or_cvisit
See boostorg/unordered@834580b
(cherry picked from commit f594a8e)
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Automatic backport to
2.32-maintenance, triggered by a label in #14340.