Sin, the original author and maintainer of a few of the suckless utils necessary for Stali, has a similar project called Morpheus[0]. He has actually shipped a bootable image for testing and has more or less gotten the packaging sorted out[1].
If you're interested in the idea, definitely check it out.
Much of the bootstrapping of Morpheus appears to have come from Sabotage Linux, especially the use of musl-cross[0]. I thought I remember seeing numerous references to Sabotage in the docs but now I can't seem to find them.
Anyhow, definitely another interesting project in a similar vein. The biggest difference I see, from a base perspective, is the choice of coreutils replacement: Sabotage uses Busybox while Morpheus uses a mixture of sbase[1], ubase[2], hbase[3] (rewrite of heriloom utils[4]), and 9base[5] (some utils from plan9port[6].)
The README for hbase characterizes it differently:
hbase is a collection of programs that complements sbase
and ubase. It's meant to be a temporary project that
will shrink and die once sbase and ubase gets
implementations of most of the programs included. hbase
mostly contains programs taken from the Heirloom project,
but also has other programs, such as patch taken from
FreeBSD and mk taken from plan9port.
So it's not a rewrite, but rather a temporary code dump for "miscellaneous utilities". Skimming at the code confirms this.
If you're interested in the idea, definitely check it out.
0: http://morpheus.2f30.org 1: http://morpheus.2f30.org/0.0/packages/x86_64/