A very good question.
As many contributors contribute to this repository (including myself) I'm not sure there is a license for the whole repository as such?
I tend to license my own work as MIT myself but including a LICENSE per port would seem a bit counter productive IHMO.
By default, it seems that the repository would fall under one of the two possibilities below if there isn't a specific license for it. * No licenses are specified for the scripts, therefore they remain under the author's copyright with no license and thus are proprietary. * The ports system is considered one piece of software and thus the scripts fall under the viral clause of the GPL. I also think that a license per port could be counter productive. A default license for the repository would make more sense, perhaps with a LICENSE option for those who really didn't want that license. Dominic