Moves the source-root and predicted-home identity assertions verbatim into a helper called at the same point with the same inputs; behaviour unchanged. Brings runInstalledDesktopSmoke's CC back under its main cap (27 -> 21).
Moves the source-root and predicted-home identity assertions verbatim into a helper called at the same point with the same inputs; behaviour unchanged. Brings runInstalledDesktopSmoke's CC back under its main cap (27 -> 21).