Alternatively, you can let the extension manage your entire toolchain automatically (you'll be asked on first startup) viaįor a general picture about the server configuration, including the project setup, you can consult the server documentation about the topic.įor information on how to set configuration in VSCode, see here.If you are installing from an offline VSIX file, you need to install language-haskell too after installation (either from the marketplace or offline).For Stack based projects, stack must be installed and on the PATH and must be configured to use GHC binaries installed by GHCup.It can also be installed with ghcup or Chocolatey on Windows. For Cabal based projects, both ghc and cabal-install must be installed and on the PATH.The easiest way to install it is with ghcup. lhs files, ghc must be installed and on the PATH. Module name suggestions for insertion or correction.Integration with hlint, the most used haskell linter, to show diagnostics and apply hints via apply-refact.Generate functions from type signatures, and intelligently complete holes using Wingman (tactics).Integration with retrie, a powerful, easy-to-use codemodding tool.Formatting via Brittany, Floskell, Fourmolu, Ormolu or Stylish Haskell.Show documentation and sources in hackage.Jump to definition: for now only for local code definitions.Type information and documentation on hover.You can watch demos for some of these features here. Note: Make sure you have a working ghcup installation, before launching the Extension. Managed by the Extension, you will have to follow the installation instructions for GHCup. Installation of GHCup can not happen automatically, so if you want your HLS installations to be This Extension comes with "batteries"-included and can manage your Haskell Language Server installations for you, Failed to get project GHC version on darwin M1 with stack.Check issues and tips in the haskell-language-server project.Set additional environment variables for the server.This extension adds language support for Haskell, powered by the Haskell Language Server.Īs almost all features are provided by the server you might find interesting read its documentation.
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