set fork workers to 1 to avoid forking issues in vscode

Author: themisvaltinos

sqlmesh/lsp/main.py

@@ -788,6 +788,10 @@ def loaded_sqlmesh_message(ls: LanguageServer, folder: Path) -> None:
 
 
 def main() -> None:
+    import os
+    # Avoid LSP forking issues for VS Code and other editors
+    os.environ["MAX_FORK_WORKERS"] = "1"
+
     # Example instantiator that just uses the same signature as your original `Context` usage.
     sqlmesh_server = SQLMeshLanguageServer(context_class=Context)
     sqlmesh_server.start()