[NTG-context] perl/Ruby dependency -- how deep?

Two questions came up when I was looking into putting ConTeXt on a USB stick (i.e., as a "portable app"): 1. Is perl still required for a ConTeXt installation (say, under Windows)? I know texexec is now written in Ruby, but are there other programs in Stand-alone or the Minimals that require perl? 2. I vaguely recall some mention of eventually replacing texexec with a Lua version. Is this actually being planned, and would that eliminate the external language dependencies of ConTeXt? --Joel