65 lines
2.1 KiB
Org Mode
65 lines
2.1 KiB
Org Mode
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* :lang haskell
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This module adds [[https://www.haskell.org/][Haskell]] support.
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+ Code completion (~company-ghc~)
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+ Look up documentation (~hoogle~)
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+ eldoc support (~dante~)
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+ REPL (~ghci~)
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+ Syntax-checking (~flycheck~)
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+ Code navigation (~dante~)
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+ [[https://github.com/hlissner/emacs-snippets/tree/master/haskell-mode][Snippets]]
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#+begin_quote
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Haskell contends with C and Ruby as my favorite language. I don't think my Haskell code will ever save the world, but I'll reach for it when working on smaller projects and programming exercises (like projecteuler.com or exercism.io).
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I'd love to incorporate more of it into my machine learning work, but Python and Julia hold that crown. For now.
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#+end_quote
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** Install
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To get started with Haskell, you need:
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+ cabal (the haskell package builder)
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+ ghc/ghci (the compiler, syntax checker & repl)
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*** MacOS
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#+BEGIN_SRC sh :tangle (if (doom-system-os 'macos) "yes")
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brew install cabal-install ghc
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#+END_SRC
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*** Arch Linux
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#+BEGIN_SRC sh :dir /sudo:: :tangle (if (doom-system-os 'arch) "yes")
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sudo pacman --needed --noconfirm -S cabal-install ghc
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#+END_SRC
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** Dependencies
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This module requires the following ~cabal~ packages:
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+ ~happy~ (required by ~haskell-src-exts~)
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+ ~haskell-src-exts~ (required by ~ghc-mod~ & ~hoogle~)
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+ ~ghc-mod~ (for auto-completion)
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+ ~hoogle~ (for documentation lookup)
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#+BEGIN_SRC sh
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cabal update
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cabal install happy haskell-src-exts ghc-mod hoogle
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#+END_SRC
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Ensure that ~\~/.cabal/bin~ is in ~PATH~:
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#+BEGIN_SRC sh
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# place this in your profile file, like ~/.bash_profile or ~/.zshenv
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export PATH="~/.cabal/bin:$PATH"
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#+END_SRC
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** Troubleshooting
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+ Stack users: if a ~dist/setup-config~ file exists in your project, [[ https://github.com/DanielG/ghc-mod/wiki#known-issues-related-to-stack][ghc-mod may
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refuse to work]].
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** Resources
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Here are a few resources I've found indespensible in my Haskell adventures:
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+ [[http://learnyouahaskell.com/][Learn you a haskell for great good]]
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+ [[http://haskellbook.com/][Haskell Programming from first principles]]
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+ [[https://github.com/krispo/awesome-haskell][Awesome Haskell]]: an extensive list of haskell resources
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