Draft v3
Assembling in Tyu — the book
Fourteen chapters and four appendices. Every lab real, every transcript
verbatim — written in the open.
Programming language
Tyu
A small, statically typed, concatenative systems language. Programs are
built from words that transform a data stack — and nearly everything written
down about a word is a machine-checked claim, not a comment.
Safety is not the brake — it’s the engine. The rigor is what licenses the daring parts.
— Assembling in Tyu, Chapter 1 — The Rigor Is the Engine
Tyu Toolchain draft v3September 2026Changelog
From source
git clone https://github.com/lexbity/tyu.git
cd tyu_lang
cargo build --release -p langc -p tyu -p lmod-pack -p lmod-sign -p lmod-encrypt
export PATH="$PWD/target/release:$PATH"Prebuilt binaries are not published yet; the toolchain is built from source. See Appendix C — Toolchain Setup
for the full procedure, the hosted and QEMU tracks, and tyu.toml project manifests.
Why verification beats vigilance, and the first ten minutes with the
toolchain.
Appendix A
Language Reference
The built-in words, lexical syntax, types, declarations, and contracts.