A Tiny HTTP Server in Yar
Yar can now serve HTTP. Not a framework, not a router, not a production web stack. Just a small stdlib package that wraps TCP, parses one request, calls a handler, writes a response, and closes the connection.
Compilers
Parsers, type checkers, code generators, garbage collectors, and the tradeoffs behind language design. The work behind the tools we think with.
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Building an IDE Plugin the Same Week You Build the Language
Most languages add tooling years after the compiler. I built the Yar IntelliJ plugin while the compiler was still changing, and that changed the language design.
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Conservative Garbage Collection in 300 Lines of C
Implementing a garbage collector for the Yar compiler meant conservative stack scanning, mark-and-sweep, setjmp for registers, heap growth targets, and one ugly thread-safety constraint.
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Designing a Package Manager When You Don't Have One
Yar needed imports across project boundaries, so I built a small package manager: Git dependencies, alias-based imports, content-addressed caching, transitive resolution, lockfiles, and no registry.