fx · LedoCorp

A systems language with visible control. Named regions and effects stay in the source. Native-first fx run for supported programs — and emit readable C when you need the C universe.

Try it

Clone the language package, put bin/ on your PATH, and use a C toolchain (gcc default). Windows or Linux x86_64. Start with the install guide or grab v0.9.74. Licensed under the GNU GPL v3.

fx doctor
fx version                 # v0.9.74
fx new hello
cd hello
fx run main.fx             # expect exit 42

Learn path

Full docs index: /fx/docs/.

Why fx

Native-first Auto · live path when supported; emit-C remains first-class
IR → native · when QBE is staged (Win + Linux)
Effects · alloc / mut (and friends) in the signature
Named regions · visible lifetimes — not a GC
Wrap / host · C owns main, fx owns the logic
Humans and agents · mechanical, explicit style that stays auditable

Not a batteries-included app platform or a scripting GC language. Built on the 0.9.6 platform freezes and short paths (no-grow v[i]=x, --cli auto-host). Grow and slot writes stay explicit.

What's new in 0.9.74

Honesty pack — gaps / trap / drivers speech; still not labeled v1.0
emit-C fast path — supported path for hot/numeric work; QBE is not the speed story
std/wire — endian u16/u32 load/store foothold (prefer --emit-c)
Dual-emit equivalence — named gate: IR and emit-C must agree on exit when both run

Notes: package docs/releases/0.9.74.md · GitHub Release.