Observed arrival · 2026-11-03
ourc: a Rust compiler built from a 269-byte seed
A self-hosting Rust compiler bootstrapped from hand-written hex that emits LLVM IR and reports passing 54% of rustc’s test suite.
○Open
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Rust compiler and bootstrap-chain developers
- Worth noticing
- Its generator is built by two different compilers, which must produce byte-for-byte identical output.
Field notes
The page maps an eight-rung chain from hand-written hex through an M0 assembly front end, C compilers, and progressively fuller Rust compilers. It says the only repository binaries are the two hex seeds, each rebuilt from commented hex; the generator is also built by two different compilers and compared byte-for-byte. The examples show both a compiled program's output and a deliberate refusal of `f32`, with no output file written for the rejected input.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue