[](https://circleci.com/gh/alanz/haskell-lsp)
[](https://hackage.haskell.org/package/haskell-lsp)
# haskell-lsp
Haskell library for the Microsoft Language Server Protocol
Warning: this library and its associated ecosystem is under development at the
moment. So do not have high expectations, it is not ready for casual use.
## Hacking
To see this library in use you need to install the [haskell-ide-engine](https://github.com/alanz/haskell-ide-engine/)
git clone https://github.com/haskell/haskell-ide-engine
cd haskell-ide-engine
stack install
This will put the `hie` executable in your path.
Then, run the plugin in vscode:
git clone https://github.com/alanz/vscode-hie-server
cd vscode-hie-server
code .
In vscode, press F5 to run the extension in development mode.
You can see a log from `hie` by doing
tail -F /tmp/hie-vscode.log
There are also facilities on the code to send back language-server-protocol log
and show events.
It can also be used with emacs, see https://github.com/emacs-lsp/lsp-haskell
## Using the example server
stack install
will generate a `lsp-hello` executable.
Changing the server to be called in the [`vscode-hie-server`](https://github.com/alanz/vscode-hie-server/blob/master/hie-vscode.sh#L21) plugin from `hie` to
`lsp-hello` will run the example server instead of hie.
Likewise, changing the executable in `lsp-haskell` for emacs.
## Useful links
- https://github.com/Microsoft/language-server-protocol/blob/master/protocol.md
## Other resource
See #haskell-ide-engine on IRC freenode