Change wireless network interface MAC at boot using macchanger on NixOS

configuration-snippet.nix

systemd = {
  services = {
    "macchanger-wireless" = {
      description = "Changes MAC of my wireless interface for privacy reasons";
      wants = [ "network-pre.target" ];
      wantedBy = [ "multi-user.target" ];
      before = [ "network-pre.target" ];
      bindsTo = [ "sys-subsystem-net-devices-wlp3s0.device" ];
      after = [ "sys-subsystem-net-devices-wlp3s0.device" ];
      script = ''
        ${pkgs.macchanger}/bin/macchanger -e wlp3s0
      '';
      serviceConfig.Type = "oneshot";
    };
  };
};