hnix

Haskell parser, evaluator and type checker for the Nix language.

Prerequisites

Nix is installed and in your $PATH. This is so that nix-store can be used for interacting with store paths, until hnix-store is ready.

Getting Started

$ git clone --recursive https://github.com/jwiegley/hnix.git
...
$ cd hnix
$ nix-shell
$ cabal configure --enable-tests
$ cabal build
$ cabal test
# To run all of the tests, which takes up to a minute:
$ LANGUAGE_TESTS=yes NIXPKGS_TESTS=yes cabal test
$ ./dist/build/hnix/hnix --help

Building with benchmarks enabled

To build hnix with benchmarks enabled:

$ nix-shell --arg doBenchmarks true
$ cabal configure --enable-tests --enable-benchmarks
$ cabal build
$ cabal bench

Building with profiling enabled

To build hnix with profiling enabled:

$ nix-shell --arg doProfiling true
$ cabal configure --enable-tests --enable-profiling
$ cabal build
$ ./dist/build/hnix/hnix <args> +RTS -p

How you can help

If you're looking for a way to help out, try taking a look here. When you find an issue that looks interesting to you, comment on the ticket to let others know you're working on it; look for others who might have done the same. You can talk with everyone live on gitter.

When you're ready to submit a pull request, test it with:

git submodule update --init --recursive
nix-shell --run "LANGUAGE_TESTS=yes cabal test"

Make sure that all the tests that were passing prior to your PR are still passing afterwards; it's OK if no new tests are passing.