- most nixos user only require time synchronisation, while ntpd implements a battery-included ntp server (1,215 LOCs of C-Code vs 64,302) - timesyncd support ntp server per interface (if configured through dhcp for instance) - timesyncd is already included in the systemd package, switching to it would save a little disk space (1,5M)
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.