Emacs Haskell setup

My emacs init.el file

This init file configures emacs to:

• use intero for both stack and non-stack haskell files
• use flycheck to show hlint warnings as-you-type (must install hlint separately - see below)
• use hasky-stack for invoking stack from emacs
• use Shift+arrow keys to do window navigation
• set some other look-and-feel related settings

Installation

1. install stack
2. install hlint globally using stack install hlint (run from outside a stack project)
3. install emacs
4. copy init.el file (from this repo) to ~/.emacs.d directory on your machine (create the directory if necessary)

The first time a haskell file is opened in emacs it will take some time to install everything.

keyboard shortcuts

Key binding	Description
Alt-.	Jump to definition
Ctl-c Ctl-i	Show information of identifier at point
Ctl-c Ctl-t	Show the type of thing at point, or the selection
Ctl-u Ctl-c Ctl-t	Insert a type signature for the thing at point
Ctl-c Ctl-l	Load this module in the REPL
Ctl-c Ctl-c	Evaluate the selected region in the REPL
Ctl-c Ctl-r	Apply suggestions from GHC
Ctl-c Ctl-k	Clear REPL
Ctl-c Ctl-z	Switch to and from the REPL
Shift-arrow	move to window in arrow direction
Alt-s Alt-s	stack command menu
Alt-s Alt-t	stack targets menu

The 2 stack commands only work when editing files within a stack project.

Reminder: select region: Ctl+space, cut: Ctl-w, copy: Alt-w, paste: Ctl-y.

(Don't be tempted to enable cua mode because you won't be able to show type of selections using Ctl-c Ctl-t.)

Screenshot: