tmuxp.workspace.builder.ClassicWorkspaceBuilder.__init__

session_config (dict[str, t.Any]) # – session config, includes a list of windows.

server (Server) # – tmux server to build session in

plugins (list[t.Any] | None) # – plugins to be used for this session

on_progress (t.Callable[[str], None] | None) # – callback for progress updates during building

on_before_script (t.Callable[[], None] | None) # – called just before before_script runs; use to clear the terminal (e.g. stop a spinner) so script output is not interleaved

on_script_output (t.Callable[[str], None] | None) # – called with each output line from before_script subprocess; when set, raw TTY tee is suppressed so the caller can route lines to a live panel instead

on_build_event (t.Callable[[dict[str, t.Any]], None] | None) # – called with a dict event at each structural build milestone (session created, window started/done, pane creating, workspace built); used by the CLI to render a live session tree