liminix/modules/hostname.nix

{ lib, pkgs, config, ...}:
let
  inherit (lib) mkOption types;
in {
  options = {
    hostname = mkOption {
      description = ''
        System hostname of the device, as returned by gethostname(2). May or
        may not correspond to any name it's reachable at on any network.
      '';
      default = "liminix";
      type = types.nonEmptyStr;
    };
    hostname-script = mkOption {
      description = ''
        Script that outputs the system hostname on stdin.
      '';
      default = pkgs.writeScript "hostname-gen" ''
        #!/bin/sh
        echo ${config.hostname}
      '';
      defaultText = ''
        pkgs.writeScript "hostname-gen" '''
        #!/bin/sh
        echo ''${config.hostname}
      '''
      '';
      type = types.package;
    };
  };
}