be all over bar the shouting

be all over ˌbar the ˈshouting

(of a performance, contest, etc.) be finished or decided, with only the audience’s reaction or the official announcement to follow: Now that the first few election results have been declared, it’s really all over bar the shouting.
Bar in these two expressions is a preposition meaning ‘apart from’.
See also: all, bar, over, shout