68 lines
1.9 KiB
Plaintext
68 lines
1.9 KiB
Plaintext
* Preparing Emacs front-end
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**Downloading
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Please use *stable* [MELPA https://stable.melpa.org/] to download Emacs front-end. So, your "~/.emacs" should be:
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(require 'package)
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(add-to-list 'package-archives
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'("melpa" . "https://stable.melpa.org/packages/"))
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(package-initialize)
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The package name is "ghc".
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Please don't forget ["install the latest cabal command" install.html].
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**Configuring "~/.emacs.el"
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Then, put the followings to your "~/.emacs.el" or "~/.emacs.d/init.el":
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(autoload 'ghc-init "ghc" nil t)
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(autoload 'ghc-debug "ghc" nil t)
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(add-hook 'haskell-mode-hook (lambda () (ghc-init)))
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IMPORTANT: if your haskell-mode-hook includes (flymake-mode), please remove it.
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**Testing
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Executes Emacs and opens a Haskell file by C-xC-f. And try to complete any keywords by M-C-i.
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**Debugging
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ghc-mod/ghc-modi must be compiled by GHC which you are actually using from Emacs. The version of Emacs front-end and ghc-mod/ghc-modi must be the same. To confirm this, type M-x ghc-debug.
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Path: check if you are using intended programs.
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ghc.el path: /Users/kazu/work/ghc-mod/elisp/ghc.el
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ghc-mod path: /Users/kazu/Library/Haskell/bin/ghc-mod
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ghc-modi path: /Users/kazu/Library/Haskell/bin/ghc-modi
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ghc path: /usr/local/ghc-7.8/bin/ghc
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Version: all versions must be the same.
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ghc.el version 4.1.0
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ghc-mod version 4.1.0 compiled by GHC 7.8.2
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ghc-modi version 4.1.0 compiled by GHC 7.8.2
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The Glorious Glasgow Haskell Compilation System, version 7.8.2
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If you put (setq ghc-debug t) to your ".emacs", you can watch the communication between Emacs front-end and ghc-modi in the "*GHC Debug*" buffer.
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**Customizing
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If you want to specify GHC options from Emacs, set "ghc-ghc-options".
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The following is an example to specify the "-i" options to GHC.
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(setq ghc-ghc-options '("-idir1" "-idir2"))
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An example to specify HLint options:
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(setq ghc-hlint-options '("--ignore=Use camelCase"))
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