From 7dc84e18247e8ad28505fb7ac708dcf55fda21ef Mon Sep 17 00:00:00 2001
From: worldofpeace <worldofpeace@protonmail.ch>
Date: Tue, 22 Oct 2019 00:28:47 -0400
Subject: [PATCH] installer: use sddm in plasma5

Slim is abandoned and won't work with wayland.
It's in our best interest to use the display-manager
that makes most sense for Plasma5, sddm.

We've already moved on from it being default in #30890
and the graphical.nix profile, which the virtualbox profile uses,
has sddm anyway.
---
 .../cd-dvd/installation-cd-graphical-base.nix        | 12 +-----------
 .../cd-dvd/installation-cd-graphical-gnome.nix       |  2 --
 .../cd-dvd/installation-cd-graphical-kde.nix         |  9 +++++++++
 3 files changed, 10 insertions(+), 13 deletions(-)

diff --git a/nixos/modules/installer/cd-dvd/installation-cd-graphical-base.nix b/nixos/modules/installer/cd-dvd/installation-cd-graphical-base.nix
index 719ba5ffb12..e0b558dcb0d 100644
--- a/nixos/modules/installer/cd-dvd/installation-cd-graphical-base.nix
+++ b/nixos/modules/installer/cd-dvd/installation-cd-graphical-base.nix
@@ -22,17 +22,7 @@ with lib;
     });
   '';
 
-  services.xserver = {
-    enable = true;
-
-    # Automatically login as nixos.
-    displayManager.slim = {
-      enable = true;
-      defaultUser = "nixos";
-      autoLogin = true;
-    };
-
-  };
+  services.xserver.enable = true;
 
   # Provide networkmanager for easy wireless configuration.
   networking.networkmanager.enable = true;
diff --git a/nixos/modules/installer/cd-dvd/installation-cd-graphical-gnome.nix b/nixos/modules/installer/cd-dvd/installation-cd-graphical-gnome.nix
index 0b813bbf37b..23c3426bff0 100644
--- a/nixos/modules/installer/cd-dvd/installation-cd-graphical-gnome.nix
+++ b/nixos/modules/installer/cd-dvd/installation-cd-graphical-gnome.nix
@@ -10,8 +10,6 @@ with lib;
 
   services.xserver.desktopManager.gnome3.enable = true;
 
-  services.xserver.displayManager.slim.enable = mkForce false;
-
   # Auto-login as root.
   services.xserver.displayManager.gdm.autoLogin = {
     enable = true;
diff --git a/nixos/modules/installer/cd-dvd/installation-cd-graphical-kde.nix b/nixos/modules/installer/cd-dvd/installation-cd-graphical-kde.nix
index 1dc7920ff64..6a10a6404e6 100644
--- a/nixos/modules/installer/cd-dvd/installation-cd-graphical-kde.nix
+++ b/nixos/modules/installer/cd-dvd/installation-cd-graphical-kde.nix
@@ -13,6 +13,15 @@ with lib;
       enable = true;
       enableQt4Support = false;
     };
+
+    # Automatically login as nixos.
+    displayManager.sddm = {
+      enable = true;
+      autoLogin = {
+        enable = true;
+        user = "nixos";
+      };
+    };
   };
 
   environment.systemPackages = with pkgs; [