[Nix-dev] kde will not start

[moaxcp]

Hello,

I few weeks ago kde stopped loading for me. After looking into the logs I
found this in kdm.log.

klauncher(993) kdemain: No DBUS session-bus found. Check if you have
started the DBUS server.
kdeinit4: Communication error with launcher. Exiting!
kdmgreet(987)/kdecore (K*TimeZone*): KSystemTimeZones: ktimezoned
initialize() D-Bus call failed:  "Not connected to D-Bus server"

kdmgreet(987)/kdecore (K*TimeZone*): No time zone information obtained from
ktimezoned
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) AIGLX: Suspending AIGLX clients for VT switch

I checked systemctl and found that dbus is started so why could this error
happen.

Here is what I have in my configuration.nix

    xserver = {
      enable = true;
      layout = "us";

      videoDrivers = [ "nvidia" ];
      synaptics.enable =true;

      displayManager = {
        kdm.enable = true;
      };

      desktopManager = {
        kde4.enable = true;
      };
    };
  };

At first I thought this was the nvidia driver but on gentoo I normally had
a blank screen when something went wrong. When it goes out now I get a
terminal.

Is there anything I can do to fix this?
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