Private spacemacs layer to try out Chris Done's Intero mode for haskell

packages.el

;; 1. place this in ~/.emacs.d/private/intero/packages.el

;; 2. add intero, syntax-checking and auto-completion to your
;; ~/.spacemacs layer configuration & remove the haskell layer
;; if you were using that before

;; 3. make sure you have stack installed http://haskellstack.org

;; 4. fire up emacs & open up a stack project's source files

(defconst intero-packages
  '(company
    flycheck
    haskell-mode
    hindent
    (intero :location (recipe
                       :repo "chrisdone/intero"
                       :fetcher github
                       :files ("elisp/intero.el")))))

(defun intero/init-company-mode ()
  (use-package company-mode))

(defun intero/init-hindent ()
  (use-package hindent))

(defun intero/init-haskell-mode ()
  (use-package haskell-mode))
(defun intero/post-init-haskell-mode ()
  (add-hook 'haskell-mode-hook 'hindent-mode)
  (add-hook 'haskell-mode-hook 'intero-mode))

(defun intero/init-intero ()
  (use-package intero))
(defun intero/post-init-intero ()
  (flycheck-add-next-checker 'intero '(warning . haskell-hlint)))

Worked well for me, but the intero repl behaved like a pure text buffer instead of a command-line - maybe the shell-mode was not enabled?

@gregwebs @meditans I merged in a patch which gets rid of the "Wrote buffer .." message: chrisdone-archive/intero#54

I'm guessing this on first start after activating this:

Compiling file /home/magnus/.emacs.d/elpa/intero-20160606.926/intero.el at Mon Jun  6 09:56:19 2016
intero.el:50:1:Error: Cannot open load file: no such file or directory, flycheck

Emacs 24.5 on Arch Linux, and the syntax-checking layer is activated.

@magthe yeah, I got the same error

@chrisdone thanks, that patch works! I just had to go into the elpa package list and update intero.

Any thoughts on what keybindings this could run under? Perhaps SPC m .. like the current haskell layer uses, since it's not meant to be mixed?

I am trying to expand on this layer to add keybindings that are consistent with other spacemacs layers, e.g. using SPC m as leader key and mapping other commands with mnemonic but I cannot it work even with the simplest example:

(defun intero/init-intero ()
  (use-package intero
    :config
    (progn
      (spacemacs/set-leader-keys-for-major-mode 'intero-mode "ml" 'intero-repl-load))
    ))

I am a total noob with spacemacs... Any idea?