{"adoption": {"forks": 146, "observed_at": "2026-08-28T04:06:52.756878+00:00", "stars": 2447}, "canonical_url": "https://ross.abutalabs.com/products/luna", "card": {"archived": true, "artifact_type": "learning-resource", "description": "luna programming language - a small, elegant VM implemented in C", "domain": ["programming-languages", "compilers", "developer-tools"], "enriched": true, "function": ["programming-language", "interpreter", "parser", "compiler"], "health_score": 10, "homepage": null, "language": "C", "license": null, "license_family": "other", "maturity": "experimental", "member_repos": ["tj/luna"], "name": "tj/luna", "platform": ["cpp", "cli"], "pushed_at": "2018-01-11T15:59:00+00:00", "repo": "tj/luna", "stars": 2447, "tags": ["virtual-machine", "coroutines", "statically-typed", "repl", "work-in-progress", "linux", "macos"], "topics": [], "urls": [], "use_cases": ["study how a language VM and compiler are implemented in C", "explore programming language design and contribute to a new language", "learn about lexers, parsers, and AST construction", "experiment with statically typed scripting language syntax", "understand coroutine-based concurrency design"], "what_it_is": "Luna is a small, elegant programming language with a VM implemented in C, featuring static typing with inference and coroutine-based concurrency. It is an early work-in-progress that currently only lexes, parses, and builds an AST - it cannot execute code yet.", "when_to_avoid": ["you need a language that actually runs code - Luna cannot execute programs yet", "you need a production-ready or stable language for real projects", "you need a mature toolchain, libraries, or ecosystem", "you need a maintained project - development appears stalled since 2018"], "when_to_choose": ["you want to read a small (~2000 SLOC) codebase to learn VM/compiler internals", "you want to participate in designing a new language from the ground up", "you need a minimal reference implementation of a lexer, parser, and AST"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/luna", "repo": "tj/luna", "role": "main", "score": 10}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:52.756878+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:30:31.341594+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "d5685a1d5b0cc1a6b169f284293db63be37de099308abd5ba30c406b7bf62502", "fetched_at": "2026-08-28T04:06:52.756878+00:00", "kind": "readme", "missing": false, "url": "https://github.com/tj/luna"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 0, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-03T02:20:16.233290+00:00", "flags": ["no_releases", "archived", "no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 5571, "days_push": 3156, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 10, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}