https://github.com/dslm4515/Musl-LFS
I played with it for a while as the base OS for my KVM hypervisor servers.
A couple of years ago, I tried to find all the source archives for the old LFS releases. I ended up using the Debian and kernel.org archives to find most of the old package versions. Packages from before 2004 started disappearing like as86 and the PowerPC patches. I was never able to find the PowerPC patches because they were never mirrored on anything but FTP sites. The Internet Archive did not pick up any of those mirrors. https://archive.org/details/linuxfromscratch-releases
I eventually replaced the Musl-LFS build and replaced it with a buildroot set of configs and scripts when I had issues replicating my work with later package versions. Buildroot allowed me to more rapidly test and deploy my hypervisor config. I wanted a simple /etc/rc init like what was in SunOS 4, no GRUB, and QEMU with VDE networking.
I ended up with SYSLINUX for BIOS MBR and gummiboot(before it was converted into systemd-boot) for EFI because my EFI machine (Dell R810) did not allow for direct booting of EFI binaries.