
From the systemd release notes: nss-mymachines lost support for resolution of users and groups, and now only does resolution of hostnames. This functionality is now provided by nss-systemd. Thus, the 'mymachines' entry should be removed from the 'passwd:' and 'group:' lines in /etc/nsswitch.conf (and 'systemd' added if it is not already there).
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.