Doas

doas is a utility to execute commands as a different user, typically the super user. It is often installed as a replacement for sudo, due to its ease of configuration and greater simplicity.

Configuration

The following configuration will give the user foo the ability to execute commands as the super user via doas, while disabling the sudo command.

security.doas.enable = true;
security.sudo.enable = false;
security.doas.extraRules = [{
  users = ["foo"];
  keepEnv = true;  # Optional, retains environment variables while running commands, e.g. your NIX_PATH when applying your config
  persist = true;  # Optional, only require password verification a single time
}];