How to sublimetext: 1) install LSP package 2) Add this to user settings : "clients": { "amycd": { "command": [ "sbt", "run" ], "enabled": true, "languages": [ { "languageId": "amyc", "scopes": [ "source.amy", "source.scala" ], "syntaxes": [ "Packages/Scala/Scala.sublime-syntax" ] } ] } }, Note: With the previous command/setting, you need to edit code in tha same project as the amyc language server (since it runs naivly and doesnt exist in the PATH or as an alias) 3) Open a .amy file 4) Set Syntax to scala 5) Start LSP server