Calculate Linux is a Gentoo-based family of three distinguished distributions. Calculate Directory Server (CDS) is a solution that supports Windows and Linux clients via LDAP + SAMBA, providing proxy, mail and Jabbers servers with streamlined user management. Calculate Linux Desktop (CLD) is a workstation and client distribution with KDE, MATE or Xfce desktop that includes a wizard to configure a connection to Calculate Directory Server. Calculate Linux Scratch (CLS) is live CD with a build framework for creating a custom distribution.
This is Scratch Edition
https://www.calculate-linux.org/
More info: https://distrowatch.com/table.php?distribution=calculate