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
git clone https://github.com/haskell/haskell-ide-engine --recursive
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 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
Other resource
See #haskell-ide-engine on IRC freenode