systemd.exec(5) on DynamicUser: > If a statically allocated user or group of the configured name > already exists, it is used and no dynamic user/group is allocated. Using DynamicUser while still setting a group name can be useful for granting access to resources that can otherwise only be accessed with entirely static IDs.
*** 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.