We use it for some of our tools, so it's possible (and works nicely). Our LSP server was initially written in Toit: https://github.com/toitlang/toit/tree/master/tools/lsp/serve... (To be fair, it uses the compiler underneath for analyzing the sources).

Main restriction is, that we haven't finished the Windows implementation yet. Specifically networking and spawning processes only works on Linux/macOS so far. (The main reason we ported the LSP server to Go).

The `host` package (https://pkg.toit.io/package/github.com%2Ftoitlang%2Fpkg-host...) provides some functionality for running things on the desktop.