Oasis is a fully statically linked Linux system, no dynamic libraries, no package manager.
BearSSL instead of OpenSSL, netsurf instead of Firefox, sinit instead of systemd.
Referred to as closer to a BSD system than a typical distro. Config is plain files in /etc, the init script is just over a dozen lines. The build writes the filesystem into a Git repo you merge into /.
Check it out: ~mcf/oasis - a small statically-linked linux system - sourcehut git