Superseeded by https://github.com/Infinisil/all-hies

This project is around just for reference, please use all-hies instead.

Purpose

The purpose of this repository is to provide HIE for each major GHC version installable via Nix.

Hie built with specific GHC needs to match the major version of GHC used on development project.

Install

For linux you can use binaries provided by Cachix. See instructions how to configure cachix. Otherwise (on macOS) be prepared to compile for a while.

To install a wrapper that will be able to pick between hie-8.2 and hie-8.4:

$ nix-env -iA hies -f https://github.com/domenkozar/hie-nix/tarball/master
$ hie-8.2 --help
$ hie-8.4 --help

Or for just a specific GHC and get hie:

$ nix-env -iA hie84 -f https://github.com/domenkozar/hie-nix/tarball/master
$ hie --help

Updating HIE

# edit commit in update.sh
$ ./update.sh

FAQ

How do I make editor integrate the right hie version?

Install hies which will include all supported GHC versions and the wrapper supported by most editors.

How do I integrate my editor?

See https://github.com/haskell/haskell-ide-engine#editor-integration

Does hie-nix work with Stack?

Yes, but make sure you have Nix enabled in either stack.yaml in your project or globally:

$ cat ~/.stack/config.yaml
nix: 
  enable: true

How can I expose Nix's hoogle database to HIE

hie looks at the environment variable HIE_HOOGLE_DATABASE, one can find the index by looking at Nix's Hoogle wrapper script.

One can add the below to the shell's shellHook. Make sure to use ghcWithHoogle or ghc.withHoogle when creating the shell to ensure the Hoogle database is created.

export HIE_HOOGLE_DATABASE="$(cat $(which hoogle) | sed -n -e 's|.*--database \(.*\.hoo\).*|\1|p')"