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Vim as a Haskell IDE

There is a wide range of tools and corresponding VIM plugins that provide IDE-like features for Haskell development: haskell-ide-engine (implements the Language Server Protocol, thus needs a VIM LSP client), Intero, Dante, Codex, hdevtools and more. A less feature-rich but stable solution is to have ghcid running next to the editor window as described in [1]


  • haskell-vim Quote from [2]: "It’s the filetype plugin for Haskell that should ship with Vim."
  • Ale (Asynchronous Linting Engine)

ALE (Asynchronous Lint Engine) is a plugin for providing linting (checking syntax and semantics) in NeoVim 0.2.0+ and Vim 8 while you edit your text files, and acts as a Vim Language Server Protocol client.

Comes with linters cabal_ghc, ghc, ghc_mod, hdevtools, hie, hlint, stack_build, stack_ghc

hdevtools is a command line program powered by the GHC API, that provides services for Haskell development. hdevtools works by running a persistent process in the background, so that your Haskell modules remain in memory, instead of having to reload everything each time you change only one file. This is just like :reload in GHCi - with hdevtools you get the speed of GHCi as well as tight integration with your editor.

This is the Vim plugin that integrates Vim with hdevtools.