{"ast_node_type":"variable","tokens":[{"end":76,"kind":"keyword","start":0,"text":"let"}]}
    let root = AbsPathBuf::assert_utf8(std::env::current_dir()?.join(root));
) -> anyhow::Result<(RootDatabase, vfs::Vfs, Option<ProcMacroClient>)> {
    let root = ProjectManifest::discover_single(&root)?;