Overview

This repository contains:

• nix/parser - a Nix parser. Optimized for speed, it parses all Nixpkgs in 2 seconds. It preserves comments and source positions and can be used to implement Nix files formatting.
• nix/nixhash - Nix-compatible hasher for store paths.
• nix/eval - an incomplete Nix evaluator. It can't evaluate realistic Nix files, but it's a start.
• cmd/gon - an utility that exposes these libraries from the command line.

Development

How to build

$ nix-build

Build cmd/gon

$ result-bin/bin/gon help

Get a development environment

$ nix-shell
$ go build ./...

Run tests

$ go test ./...

Credits

• ragel generates the Nix lexer
• goyacc generates the Nix parser
• kingpin powers the CLI