I've mentioned before that I'm a fan of bootstrapping, even if I personally haven't done much of it. It seems like a good idea, but usually I only see Forth users caring about such details.
Even though I'm only a casual Linux user (sometimes), and thus I've never used this particular distro, it seems that GuixSD contributors have done some cool work with something called
Mes.
Mes consists of a self-hosting Scheme interpreter and a Nyacc-based C compiler written in Scheme. From this Scheme interpreter to build its C compiler, it can then build a (slightly patched) TinyCC compiler and in turn that resulting TinyCC compiler can go on to building GCC 4.7, Glibc 2.2.5, and Binutils 2.20 for getting a toolchain in place to go on to build the rest of the GNU/Linux platform.
Granted, I don't know Scheme (or any Lisp) and have no direct interest in it, but this sounds fascinating!