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schemelike-metacircular-eval

Guide incremental implementation and testing of metacircular evaluators for Scheme-like languages.

Updated Feb 24, 2026
Search Tags:#lisp#interpreter#scheme#compiler construction#metacircular evaluator#self-interpretation
One-click install
npx skills add https://github.com/Zurybr/lefarma-skills --skill schemelike-metacircular-eval
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: schemelike-metacircular-eval
Source: https://github.com/Zurybr/lefarma-skills/tree/main/letta/benchmarks/trajectory-only/schemelike-metacircular-eval
Command: npx skills add https://github.com/Zurybr/lefarma-skills --skill schemelike-metacircular-eval

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill guides the complex process of building metacircular evaluators—interpreters written in the language they interpret—ensuring they can reliably interpret themselves.

Core Features & Use Cases

  • Metacircular Property Verification: Provides a rigorous testing framework to ensure the evaluator interprets itself correctly.
  • Incremental Development: Outlines a phased approach, starting with a minimal core and adding features systematically.
  • Use Case: When developing a new Lisp dialect or a custom Scheme interpreter, use this Skill to ensure its core evaluation logic is sound and self-consistent.

Quick Start

Follow the incremental implementation phases outlined in the skill to build your metacircular evaluator.

Frequently Asked Questions about schemelike-metacircular-eval

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is a metacircular evaluator in Scheme and when do I need one?▼

A metacircular evaluator is a Scheme interpreter written in Scheme itself, used to verify core evaluation logic. You need one when developing a custom Lisp dialect to ensure self-consistency and sound evaluation mechanics.

How do I build a metacircular Scheme interpreter incrementally?▼

Build a metacircular evaluator by starting with a minimal core interpreter and incrementally adding features. Systematically test at multiple interpretation levels to verify the evaluator can reliably interpret itself.

How do I verify the metacircular property of a Scheme interpreter?▼

Verify the metacircular property through continuous testing at multiple interpretation levels. A rigorous testing framework ensures the evaluator correctly interprets itself by checking data structure invariants across levels.

Why does my self-interpreting Scheme evaluator fail on closure capture?▼

Debug environment implementations and special forms by systematically checking closure capture and data structure invariants across interpretation levels. Continuous testing at multiple levels isolates self-interpretation inconsistencies.

Do I need prior compiler construction experience to implement a metacircular evaluator?▼

Advanced implementation depth requires familiarity with Lisp, Scheme, and compiler construction concepts. The Skill guides incremental development from a minimal core, but understanding self-interpretation challenges is essential.

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