We patch gdmsetup to exec from the menu through gksu, but there is no runtime dependency on it, so from the office machine I currently get the following when choosing "Login Window" from under System->Administration: Could not launch menu item Failed to execute child process "gksu" (No such file or directory) Note that this isn't necessary for build time, but not sure that matters (strictly speaking we don't need it in DEPEND through DEPEND=${RDEPEND} but only in RDEPEND, but that might reduce readability of deps for minimal gain). Reporting here to not forget as I'm otherwise busy at work.
Fixed; sorry about that.