Separate names with a comma.
.. install git and make sure it's in your path? if you can't solve such a trivial error you shouldn't be trying to build luma to start off with..
yeah you should have fully CFW you old 3ds first, then prepare the dsiware hax and system transfer to get cfw on your 11.4 new 3ds.
you'll have to wait until ntrcardhax is out, or hardmod.