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2 Installation

Haskell Mode is distributed as a package in MELPA repository. To use MELPA as Emacs package archive do the following:

  1. Customize package-archives using
    M-x customize-option RET package-archives
  2. Use INS to add new archive, use:
    Archive name:          melpa-stable
    URL or directory name:
  3. Fetch new packages using:
    M-x package-refresh-contents
  4. Install Haskell Mode using:
    M-x package-install RET haskell-mode RET

Voila! haskell-mode is installed! You should be able to edit Haskell source code in color now.

The above steps should result in the following snippet in your .emacs:

(require 'package)
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
    (("gnu" . "")
     ("melpa-stable" . "")))))

Haskell Mode supports GNU Emacs versions 24.3+, including 25 (snapshot).

Haskell Mode is available from melpa-stable (releases) and melpa (git snapshots).

Other means of obtaining haskell-mode include el-get, Emacs Prelude and Debian package.

Last version of haskell-mode that supported Emacs 23, 24.1, and 24.2 is haskell-mode 13.16 available at

2.1 Customizing

Most of Haskell Mode’s settings are configurable via customizable variables (see (emacs)Easy Customization, for details). You can use M-x customize-group RET haskell to browse the haskell customization sub-tree.

One of the important setting you should customize is the haskell-mode-hook variable (see (emacs)Hooks) which gets run right after the haskell-mode major mode is initialized for a buffer. You can customize haskell-mode-hook by

M-x customize-variable RET haskell-mode-hook

There you can enable or disable a couple of predefined options or add any function to the list.

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