As of commit 3f7d0907269558cb3ea184a3083640f9e20bb21e vim upstream has changed from configure.in to configure.ac -> https://github.com/vim/vim/commit/3f7d0907269558cb3ea184a3083640f9e20bb21e This makes the live ebuilds from all three packages stop working. Just switching to "configure.ac" fixes that problem.
Fixed in the tree.