munificent/vigil
Vigil, the eternal morally vigilant programming language observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4990
- days_rel: n/a
- days_push: 1437
- n_releases_24m: 0
Adoption not part of the score
3037 stars · 63 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Vigil is an esoteric programming language implemented as a Python-based command-line interpreter, originally created for the January 2013 PLT Games competition. It enforces design-by-contract style oaths — `implore` preconditions and `swear` postconditions — and humorously 'punishes' any function that violates them at runtime by deleting it from the source code.
Use cases
- design by contract programming language
- esoteric programming language examples
- learn how to build an interpreter in Python
- programming language that deletes buggy code
- funny programming languages for a talk or article
- runtime assertion and contract checking
When to choose
- You want a small, readable Python codebase for studying or teaching how a programming language interpreter works
- You want a memorable, humorous demonstration of design-by-contract enforcement for presentations, courses, or writing
When to avoid
- You need a language for real or production software — Vigil is a 2013 competition joke whose runtime deletes offending source code
- You need active maintenance, a license, a package ecosystem, or community support
Facets
cli-tool · maturity maintenance
programming-language interpreter parser programming-languages parsers testing cross-platform cli python esoteric-language joke-language design-by-contract plt-games runtime-verification humor toy-language language-implementation
1 source
- readme: https://github.com/munificent/vigil · fetched 2026-08-28 · 625d4617a198
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| munificent/vigil | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="munificent/vigil")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem