int overflow in builtins.compareVersions

Describe the bug

nix-repl> builtins.compareVersions "0" "2147483647"
-1
nix-repl> builtins.compareVersions "0" "2147483648"
1

Steps To Reproduce

Expected behavior

Version 2147483648 should not wrap to a negative version.

Metadata

Nix 2.34.8

Additional context

Found using https://github.com/yorickvP/nix-pbt (property based testing of nix builtins), assisted by claude-opus-5.5.

Checklist

• checked latest Nix manual (source)
• checked open bug issues and pull requests for possible duplicates
• reviewed the contributing guide

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