Join 10350+ others. No spamming.
I promise!

Follow us at github.



commercialhaskell / intero


Complete interactive development program for Haskell


intero Build Status MELPA MELPA Stable AppVeyor Build Status

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-c Evaluate the selected region 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

Enabling intero

To enable intero in all haskell-mode buffers by default, enable intero-global-mode, by using M-x customize or by adding (intero-global-mode 1) to your Emacs start-up files.

Intero will then activate for all projects, and for files without a stack.yaml, it will assume the "global" project.

Whitelisting/blacklisting projects

Some users prefer to enable Intero selectively. The custom variables intero-blacklist and intero-whitelist are provided for this purpose, and are honoured by intero-global-mode:

If the parent directory of a Haskell file is listed in intero-blacklist, then intero will not be enabled for that file, unless a parent directory of that file is also listed in intero-whitelist. In other words, whitelist entries take precedence. You can therefore blacklist / to disable intero in all projects unless they are whitelisted.

Intero for IDE writers

Please see the file for how to use Intero to integrate your own editor..


Issues are split into low/medium/high priorities which dictates which ones will be implemented first.