Bootstrapping: The once and future compiler
summary
Rust bootstrapping compiles each release with the immediate previous release and uses staging rebuild of libstd so nightly can dogfood new language features. A C++ frontend mrustc supports ~1.54 (≈10 versions back) and a GCC frontend gccrs passes ~50% of rustc tests as alternative trust anchors to avoid long trust chains. The existing python downloader is being replaced by a Rust-based bootstrap downloader with 6 of 11 tasks completed, reducing external tool friction.
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chapters (9)
- 0:00Start
- 2:44The Standard Library
- 3:07Addition Trait
- 5:59Why Is the Compiler Different
- 7:51Why Are We Rebuilding the Standard Library
- 10:04Miscompilation
- 12:46Compiler Theory
- 16:55Diverse Double Compilation
- 22:08Joshua Nelson
