chore: Update Lean to v4.33.0 - #42
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Toolchain and dependencies bumped by lean-update.
Upstream lean4-nix stops at Lean v4.32.0 and builds toolchains from source
behind an overlay; the fork provides released toolchains as plain
derivations and removed the overlay API. The overlay block is replaced by
`lib.${system}.fromToolchainFile`, and the Lean sysroot for bindgen and the
dev shell take the toolchain derivation directly.
samuelburnham
enabled auto-merge (squash)
August 12, 2026 16:37
Formatting-only, plus the formatter declaration itself; nixfmt-tree wraps nixfmt so `nix fmt .` can still take a directory.
arthurpaulino
approved these changes
Aug 12, 2026
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lean-toolchainand dependencies updated for Lean releasev4.33.0by lean-update.