refactor rice into config

graphical/udisks.nix

@@ -0,0 +1,17 @@
+{ lib, pkgs, ... }:
+{
+  services.udisks2.enable = true;
+  hm.services.udiskie.enable = true;
+  # fix reliance on nonexistent graphical-session-pre.target
+  hm.systemd.user.services.udiskie = lib.mkForce {
+    Unit = {
+      Description = "udiskie mount daemon";
+      After = [ ];
+      PartOf = [ "graphical-session.target" ];
+    };
+
+    Service.ExecStart = [ "${pkgs.udiskie}/bin/udiskie --appindicator" ];
+
+    Install.WantedBy = [ "graphical-session.target" ];
+  };
+}