Making a Type Checker/LSP for Nix
6.8 relevance
Score Breakdown
technical depth 8
novelty 6
actionability 7
community 6
strategic 5
personal 7
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Type checker and LSP for Nix, relevant to developer tooling for Nix.
Summary
Tix is a fast type checker and LSP for Nix, based on Simple Sub and Negation types, completing full nixpkgs checks in ~20 seconds. It offers autocompletion, jump-to-definition, and type errors, competing with other Nix LSPs like Nil and Nixd. By extending Hindley-Milner with subtyping, it naturally handles union types for Nix's attrset-heavy syntax.