diff --git a/apps/run-workflow-with-vm/configuration.nix b/apps/run-workflow-with-vm/configuration.nix
index cd3a0405..80d3eef4 100644
--- a/apps/run-workflow-with-vm/configuration.nix
+++ b/apps/run-workflow-with-vm/configuration.nix
@@ -1,6 +1,7 @@
 # A very basic NixOS VM configuration intended for testing out the given
 # workflow module. It's a good thing the baseline for the configuration is not
-# tedious to set up for simpler configs like this.
+# tedious to set up for simpler configs like this. Just take note this is
+# executed on a separate directory as its own so relative paths are moot.
 { workflow, extraModules ? [ ], extraHomeModules ? [ ] }:
 
 let
@@ -33,6 +34,10 @@ import <nixpkgs/nixos/lib/eval-config.nix> {
       ];
 
       config = {
+        # Enable the display manager of choice.
+        services.xserver.displayManager.gdm.enable = true;
+
+        # Configure home-manager-related stuff.
         home-manager.useUserPackages = lib.mkDefault true;
         home-manager.useGlobalPkgs = lib.mkDefault true;
         home-manager.sharedModules = extraHomeModules ++ [
@@ -46,9 +51,11 @@ import <nixpkgs/nixos/lib/eval-config.nix> {
           })
         ];
 
+        # Set up our own library.
         _module.args.foodogsquaredLib =
           import ../../lib/extras/nixos-set.nix { inherit lib; };
 
+        # The main function of the configuration.
         workflows.workflows.${workflow}.enable = true;
 
         nixpkgs.overlays = [
diff --git a/configs/nixos/ni/default.nix b/configs/nixos/ni/default.nix
index c9a31f4a..c7d7565c 100644
--- a/configs/nixos/ni/default.nix
+++ b/configs/nixos/ni/default.nix
@@ -24,6 +24,9 @@
     };
   };
 
+  # Enable the display manager of choice.
+  services.xserver.displayManager.gdm.enable = true;
+
   disko.devices = import ./disko.nix {
     disks = [ "/dev/nvme0n1" ];
   };
diff --git a/modules/nixos/workflows/a-happy-gnome/default.nix b/modules/nixos/workflows/a-happy-gnome/default.nix
index 5016493f..4c5e8628 100644
--- a/modules/nixos/workflows/a-happy-gnome/default.nix
+++ b/modules/nixos/workflows/a-happy-gnome/default.nix
@@ -85,7 +85,6 @@ in
     # Enable GNOME and GDM.
     services.xserver = {
       enable = true;
-      displayManager.gdm.enable = true;
       desktopManager.gnome.enable = true;
     };
 
diff --git a/modules/nixos/workflows/knome/default.nix b/modules/nixos/workflows/knome/default.nix
index 9c72e45d..3ac7f61b 100644
--- a/modules/nixos/workflows/knome/default.nix
+++ b/modules/nixos/workflows/knome/default.nix
@@ -9,7 +9,6 @@ in
   config = lib.mkIf cfg.enable {
     services.xserver = {
       enable = true;
-      displayManager.sddm.enable = true;
       desktopManager.plasma5 = {
         enable = true;