gimp2 and default variant

I just upgraded my gimp2 to 2.4-rc1. I noticed that now gimp2 portfile uses default variants, but it seems that the bug about "-variant" mentioned before is not fixed yet: I used -gnome and -python, but they seem not recorded. I get "gimp2 @2.4.0-rc1_0 (active)" with "port installed", and when I do "port upgrade gimp2", it's as if I originally specified +gnome and +python. Since "-variant" seems broken, can we avoid using default variants? Otherwise it's too troublesome for end users. In my case, whenever gimp2 is updated, I have to recall which variants I have disabled, and I have to do uninstall-and-install instead of upgrade. Or is there a patch on the way to fix the "-variant" problem? Best Regards, Xin Liu