Haskell Emacs configuration

                             _____________

                              EMACS-SETUP

                                 Lemao
                             _____________


Table of Contents
_________________

1 Emacs installation
2 MELPA package repository
3 Flycheck installation
4 Auto-complete installation
5 Haskell support installation


1 Emacs installation
====================

  1. Install [Emacs 24 Starter-kit]
  ,----
  | git clone http://github.com/eschulte/emacs24-starter-kit.git .emacs.d
  `----
  1. Run 'emacs' to complete the installation


  [Emacs 24 Starter-kit] http://eschulte.github.io/emacs24-starter-kit/


2 MELPA package repository
==========================

  1. Edit ~/.emacs.d/${USER}.el
  ,----
  | ;; [==:INIT package manager==]
  | (require 'package)
  | (add-to-list 'package-archives '("melpa" . "http://melpa.milkbox.net/packages/") t)
  | (package-initialize)
  `----

  1. Restart emacs and refresh package contents
  ,----
  | M-x package-refresh-contents RET
  `----

  NOTE: you should see refreshing package contents from
  melpa.milkbox.net


3 Flycheck installation
=======================

  1. Install flycheck
  ,----
  | M-x package-install RET flycheck RET
  `----

  1. Install flycheck color mode line
  ,----
  | M-x package-install RET flycheck-color-mode-line RET
  `----

  1. Configure flycheck
  Add the following to your ~/.emacs.d/${USER}.el:
  ,----
  | ;; [==:INIT flycheck==]
  | (add-hook 'after-init-hook 'global-flycheck-mode)
  | ;; (setq flycheck-check-syntax-automatically '(mode-enabled idle-change))
  |
  | ;; (require 'flycheck-color-mode-line))
  | ;; (eval-after-load "flycheck"
  | ;;  '(add-hook 'flycheck-mode-hook 'flycheck-color-mode-line-mode))
  `----


4 Auto-complete installation
============================

  1. Install the auto-complete package
  ,----
  | M-x package-install RET auto-complete RET
  `----

  1. Configure auto-complete
  ,----
  | ;; [==:INIT flycheck==]
  | (require 'auto-complete)
  `----


5 Haskell support installation
==============================

  1. Install Haskell Platform

  2. Update cabal repository
  ,----
  | cabal update
  `----

  1. Install cabal packages
  ,----
  | cabal install hdevtools ghc-mod hlint stylish-haskell
  `----

  1. Install Haskell Emacs front-end(s)
  ,----
  | M-x package-install RET haskell-mode
  | M-x package-install RET ghc
  | M-x package-install RET ghci-completion
  `----

  1. Configure haskell-mode, ghc
  ,----
  | ;; [==:INIT haskell-mode==]
  | (add-hook 'haskell-mode-hook 'turn-on-haskell-indentation)
  |
  | ;; [==:INIT ghc-mod==]
  | (autoload 'ghc-init "ghc" nil t)
  | (add-hook 'haskell-mode-hook
  |       (lambda ()
  |         (ghc-init)))
  |
  | ;; [==:INIT auto-complete==]
  | (ac-define-source ghc-mod
  |   '((depends ghc)
  |     (candidates . (ghc-select-completion-symbol))
  |     (symbol . "s")
  |     (cache)))
  |
  | (defun my-ac-haskell-mode ()
  |   (setq ac-sources '(ac-source-words-in-same-mode-buffers
  |              ac-source-dictionary
  |              ac-source-ghc-mod)))
  | (add-hook 'haskell-mode-hook 'my-ac-haskell-mode)
  |
  |
  | ;; [==:INIT fnd-file-hook==]
  | (defun my-haskell-ac-init ()
  |   (when (member (file-name-extension buffer-file-name) '("hs" "lhs"))
  |     (auto-complete-mode t)
  |     (setq ac-sources '(ac-source-words-in-same-mode-buffers
  |                ac-source-dictionary
  |                ac-source-ghc-mod))))
  | (add-hook 'find-file-hook 'my-haskell-ac-init)
  `----