Trying to use mu for searching in gnus and never getting any results. No error messages, just empty search. mu find on the command line works fine and returns what is expected (and does in mu4e as well), but this does not give me anything in Gnus. Any suggestions? …

(setq gnus-secondary-select-methods
  '((nnmaildir "mail"
	   (directory "/home/britt/.local/share/mail")
	   (gnus-search-engine gnus-search-mu))))