Arch

Adding Arch was laborious, but it was possible, because the project started and evolved to be as universal as possible.

Debian

Penguins' eggs started on Debian in 2017, it still supports buster in addition to bullseye and - still in development - bookworm.

Devuan

Eggs support Devuan beowulf, chimaera and daedalus.

Manjaro

Eggs is part of communty of Manjaro.

Ubuntu

Ubuntu is full supported: bionic, focal and jammy.

Others

Virtually every Debian, Devuan and Ubuntu derivative is supported.