nim-lang/nimony

Nimony

Nimony is a new Nim implementation that is in heavy development. The goal is a production-ready compiler this year, for projects that can live with the documented feature set -- don't assume Nim 2's feature set! Read what is available first!

Highlights

• Incremental recompilations.
• Fully parallel builds.
• No forward declarations for procs and types required.
• Type-checked generics.
• Unified concurrency and parallelism model via continuations, so-called passive procs.
• Good editor support.

Read more about the design philosophy.

Installation

Clone Nimony and build with hastur:

git clone https://github.com/nim-lang/nimony.git
cd nimony
nim c -r src/hastur build all

This builds the compiler and all supporting tools into bin/. Add bin/ to your PATH to use the compiler and tools.

First program

echo lives in std/syncio, so the hello world program is:

import std/syncio

echo "hello, world"

Compile and run:

bin/nimony c -r hello.nim

Standard library

The stdlib source is in lib/std/ and is designed to be read directly — Nim is readable enough that type signatures often suffice as documentation.

For the parts where signatures aren't enough — behavioral contracts, performance traps, design rationale — there is a curated Standard Library Guide.

The examples/ directory contains runnable Nim files that serve as both usage examples and tests. Run them with hastur examples.

Language manual

The language manual covers syntax, semantics, and the type system.