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3 starsRust

Bel interpeter vibe coded with Claude Code

by Tomasmillar·Feb 24, 2026·1 point·0 comments
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AI Analysis

●●●BangerBig BrainZero to OneNiche Gem

Runs Paul Graham's self-defining Bel spec unmodified—only 16 primitives in Rust.

Strengths
  • •Minimal, faithful substrate: no reimplementation of Bel stdlib—everything comes from bel.bel itself, true to the design.
  • •Bootstrapping clarity: demonstrates the power of metacircular evaluation; evaluator builds itself from primitives.
  • •Cross-platform and single dependency: builds on Windows/macOS/Linux with only `rand`, shipping install scripts for Rust.
Weaknesses
  • •Audience is tiny: only relevant to Lisp/PL enthusiasts and academic researchers; no practical applications.
  • •Performance baseline: list-based unary numbers are slow by design; native-math flag helps but undermines purity.
Target Audience

Programming language enthusiasts, Lisp researchers, developers interested in metacircular evaluators and language bootstrapping.

Similar To

Crafting Interpreters (educational) · Clojure on the JVM (self-hosted design)

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