Project ideas from Hacker News discussions.

Want to Write a Compiler? Just Read These Two Papers (2008)

📝 Discussion Summary (Click to expand)

Threedominant themes in the discussion

Theme Supporting quotations
1. Classic compiler books shape personal experience “I quite like “understanding and writing compilers” by Richard Bornat … it gives a friendly gentle overview … without excessive quantities of parsing theory.”msla
“I really enjoyed Crafting Interpreters, wholeheartedly recommend!”vlaaad
2. Hands‑on, incremental compiler projects are preferred “The real insight isn’t the number of passes but that each pass has an explicit input and output language, which forces you to think about what invariants hold at each stage.”blueybingo
“I think there is a million ways to make a compilers course… Without this I can imagine it being a painful experience.”kuboble
3. Learning is driven more by practice than theory “Writing a compiler is not rocket science if you know assembly language. You can pick up the gist in an hour or two by looking at a simple toy compiler.”lateforwork
“I’d never seen Knuth's middle name until your comment… I think it safely could be left out of an article.”LiamPowell (illustrating the community’s focus on concise, applicable knowledge)

Overall, the conversation clusters around classic textbook recommendations, a strong bias toward building small, readable compilers (often with modern parser‑combinator or nanopass tools), and the view that practical, incremental work outweighs deep theoretical study.


🚀 Project Ideas

[Compiler Cheat Sheet Hub]

Summary

  • [A curated, searchable hub that aggregates the latest, working compiler tutorials, books, PDFs, and code examples, eliminating broken links and scattered resources.]
  • [Core value: One‑stop reference with step‑by‑step project guides and community‑maintained cheat sheets for rapid learning.]

Details

Key Value
Target Audience Aspiring compiler writers, CS students, hobbyists
Core Feature Live, searchable index of resources with auto‑updated links and annotated summaries
Tech Stack React front‑end, Node.js/Express API, PostgreSQL, ElasticSearch
Difficulty Low
Monetization Revenue-ready: "Freemium (free basic index, paid premium guides)"

Notes

  • [HN users repeatedly complain about dead links to classic compiler books; they would instantly rely on a reliably updated repository.]
  • [Encourages community contributions, sparking discussion on resource quality and new tooling.]

[Nanopass Playground]

Summary

  • [An interactive web IDE that lets users write, test, and visualize nanopass compiler stages in real time, addressing the pain point of lacking hands‑on practice with modern compiler frameworks.]
  • [Core value: Ready‑made nanopass framework with instant feedback, error highlighting, and exportable project files.]

Details| Key | Value |

|-----|-------| | Target Audience | Students, hobbyists, educators seeking practical compiler exercises | | Core Feature | Browser‑based nanopass compiler builder with live syntax highlighting, test harness, and visual pass output | | Tech Stack | Vue.js, WebAssembly (Rust), SQLite, Docker backend | | Difficulty | Medium | | Monetization | Revenue-ready: "Subscription ($9/mo) for advanced pass library and private workspaces" |

Notes

  • [HN discussions praise nanopass architecture for its simplicity; users would love a hosted sandbox to experiment without local setup.]
  • [Potential for educational institutions to adopt as a low‑cost teaching platform.]

[Compiler Scaffold CLI]

Summary

  • [A command‑line toolkit that scaffolds a new compiler project with pre‑configured parser, AST, IR, and code‑gen templates, removing the boiler‑plate setup friction highlighted by HN commenters.]
  • [Core value: Zero‑config starter kit that includes integrated tutorials and test cases, accelerating the first prototype.]

Details

Key Value
Target Audience Beginner to intermediate developers who want to build compilers quickly
Core Feature Generates a ready‑to‑run project structure with Megaparsec parser, intermediate representation, and LLVM‑based codegen, plus built‑in learning resources
Tech Stack Python (Click), Poetry, GitHub Actions, Markdown tutorials
Difficulty Low
Monetization Hobby

Notes

  • [HN users express frustration over “dead” academic links; they would value a maintained, open‑source scaffold that stays current.]
  • [Sparks discussion on best practices for compiler education and community‑driven project sharing.]

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