Awesome
<img src="https://github.com/commercialhaskell/intero/raw/master/images/intero.svg" height=25> intero 
<a href="https://melpa.org/#/intero"><img alt="MELPA" src="https://melpa.org/packages/intero-badge.svg"/></a>
Complete interactive development program for Haskell
Intero for Emacs
Please see the homepage for Intero for Emacs.
Default key bindings
| Key binding | Description |
|---|---|
M-. | Jump to definition |
C-c C-i | Show information of identifier at point |
C-c C-t | Show the type of thing at point, or the selection |
C-u C-c C-t | Insert a type signature for the thing at point |
C-c C-l | Load this module in the REPL |
C-c C-r | Apply suggestions from GHC |
C-c C-k | Clear REPL |
C-c C-z | Switch to and from the REPL |
Whitelisting/blacklisting projects
Typically Intero will enable for all projects, and for files without a stack.yaml, it will assume the "global" project. Some users prefer to enable Intero selectively. See below how to do that.
Find this line in your Emacs configuration and remove it:
(add-hook 'haskell-mode-hook 'intero-mode)
To whitelist specific directories (and ignore everything else), use:
(setq intero-whitelist '("/work/directories/" "/my/directories/"))
(add-hook 'haskell-mode-hook 'intero-mode-whitelist)
To blacklist specific directories (and allow everything else), use:
(setq intero-blacklist '("/path/to/bad/project" "/path/to/ignore/me"))
(add-hook 'haskell-mode-hook 'intero-mode-blacklist)
Intero for IDE writers
Please see the TOOLING.md file for how to use Intero to integrate your own editor..
Issues
Issues are split into low/medium/high priorities which dictates which ones will be implemented first.