haskell/ghcide
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79d712397b
ghcide/README.md
DavidM-D 79d712397b Hic elisp (#1714) 
* Added elisp to the readme

* Changed the flags for compatibility with HIE

* Change the default arguments to reflect hie compat
2019-06-18 14:10:52 +02:00

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Haskell IDE Core

Our vision is that you should build an IDE by combining:

  • hie-bios for determining where your files are, what the dependencies, what extensions are enabled etc.
  • haskell-ide-core - this library - for defining how to type check, when to type check, and producing messages.
  • haskell-lsp for sending those messages to an LSP server.
  • A VS Code extension, e.g. extension in this directory.

There are more details in this blog post.

How to use it

Installing the binary

  1. git clone https://github.com/digital-asset/daml.git
  2. cd daml/compiler/haskell-ide-core
  3. stack build

Using the VSCode extension

  1. cd extension
  2. npm install
  3. code .
  4. Press F5 to start the extension.
  5. In the spawned extension, open the folder haskell-ide-core.
  6. In the preferences, set the Haskell IDE Core executable preference to stack and the arguments to exec -- ide-demo --lsp .ghci
  7. Run the Reload Window command in VS Code.

Installing the VSCode extension permanently

  1. cd compiler/haskell-ide-core/extension
  2. vsce package
  3. code --install-extension haskell-ide-core-0.0.1.vsix

Installing in emacs

  1. Install lsp and haskell-lsp
  2. Add this elisp to your .emacs.el
(require 'lsp)
(require 'lsp-haskell)
(require 'yasnippet)
(add-hook 'haskell-mode-hook #'lsp)
(setq lsp-haskell-process-path-hie "haskell-ide-core")
(setq lsp-haskell-process-args-hie '())