configure actual display manager

demilich/packages.nix

@@ -8,6 +8,12 @@
       };
     })
   ];
+  documentation = {
+    man = {
+      generateCaches = true;
+    };
+  };
+
   # List packages installed in system profile.
   # You can use https://search.nixos.org/ to find more packages (and options).
   environment.systemPackages = with pkgs; [