plasma: Add sddm-sugar-dark as a theme

hosts/miku.nix

@@ -75,7 +75,15 @@
       zsh.enable = true;
       direnv.enable = true;
       office.enable = true;
-      plasma.enable = true;
+      plasma = {
+        enable = true;
+        sddm = {
+          backgroundImage = pkgs.fetchurl {
+            url = "https://cdn.donmai.us/original/d3/1b/__manjuu_prinz_eugen_roon_bismarck_friedrich_der_grosse_and_3_more_azur_lane_drawn_by_zaphn__d31bf4ac564d60f8787818842c369e7f.jpg";
+            sha256 = "sha256-likoJuEaGzGH0RqjPsBE9o5ATwgnOo97PREh3oZBax8=";
+          };
+        };
+      };
       gaming.enable = true;
       obs.enable = true;
     };

modules/desktop/plasma.nix

@@ -14,6 +14,20 @@ in {
         description = "Ignore NixOS 'recommendations' and use the Wayland session by default";
       };
     };
+    sddm = {
+      backgroundImage = lib.mkOption {
+        default = "${pkgs.sddm-sugar-dark}/usr/share/sddm/themes/sugar-dark/Background.jpg";
+        description = "The background image to use with sddm-sugar-dark";
+      };
+      screenWidth = lib.mkOption {
+        default = 1920;
+        description = "Width of the screen";
+      };
+      screenHeight = lib.mkOption {
+        default = 1080;
+        description = "Width of the screen";
+      };
+    };
   };
 
   config = lib.mkIf cfg.enable {
@@ -22,9 +36,40 @@ in {
       greetd.enableKwallet = true;
     };
     services.xserver = {
-      displayManager.sddm = {
+      displayManager.sddm = let
+        sddm-sugar-dark-configured = pkgs.sddm-sugar-dark.override {
+          config = {
+            General = {
+              Background = "${cfg.sddm.backgroundImage}";
+              ScaleImageCropped = true;
+              ScreenWidth = builtins.toString cfg.sddm.screenWidth;
+              ScreenHeight = builtins.toString cfg.sddm.screenHeight;
+
+              MainColor = "navajowhite";
+              AccentColor = "white";
+              RoundCorners = 20;
+              ScreenPadding = 0;
+              Font = "Noto Sans";
+              FontSize = "";
+
+              Locale = "";
+              HourFormat = "HH:mm";
+              DataFormat = "dddd, d of MMMM";
+
+              ForceLastUser = true;
+              ForcePasswordFocus = true;
+              ForceHideCompletePassword = true;
+              ForceHideVirtualKeyboardButton = false;
+
+              HeaderText = "Welcome!";
+            };
+          };
+        };
+      in {
         enable = true;
         autoNumlock = true;
+
+        theme = "${sddm-sugar-dark-configured}/usr/share/sddm/themes/sugar-dark";
       };
       desktopManager.plasma5 = {
         enable = true;
@@ -51,7 +96,7 @@ in {
           };
         };
 
-        kwinrc = {
+        kwinrc = lib.mkIf cfg.mobile.enable {
           Plugins = {
             "org.kde.phone.multitaskingEnabled" = "false";
             "kwin4_effect_eyeonscreenEnabled" = "false";

packages/default.nix

@@ -57,8 +57,6 @@ in {
     cfscrape = cfscrape;
   };
   
-  sddm-sugar-dark = prev.callPackage ./sddm-sugar-dark {};
-  
   surface-control = prev.callPackage ./tools/system/surface-control {};
 
   trackma = prev.callPackage ./tools/video/trackma {};
@@ -88,4 +86,6 @@ in {
   wayfire-firedecor = prev.callPackage applications/wayfire/firedecor {
     wayfire = wayfire-master;
   };
+
+  sddm-sugar-dark = prev.callPackage themes/sddm/sugar-dark {};
 }

packages/themes/sddm/sugar-dark/default.nix

@@ -0,0 +1,32 @@
+{
+  fetchFromGitHub
+, stdenv, formats
+, config ? {}
+}:
+
+# This package works a bit differently as the config needs to be inside the package.
+# Override with config set to the settings you want. See
+# https://github.com/MarianArlt/sddm-sugar-dark/blob/master/theme.conf
+let
+  iniFmt = formats.ini {};
+  configFile = iniFmt.generate "theme.conf" config;
+in stdenv.mkDerivation rec {
+  pname = "sddm-sugar-dark";
+  version = "1.2";
+
+  src = fetchFromGitHub {
+    owner = "MarianArlt";
+    repo = "sddm-sugar-dark";
+    rev = "v${version}";
+    sha256 = "0gx0am7vq1ywaw2rm1p015x90b75ccqxnb1sz3wy8yjl27v82yhb";
+  };
+
+  dontBuild = true;
+
+  installPhase = ''
+    mkdir -p $out/usr/share/sddm/themes/sugar-dark
+
+    cp -r metadata.desktop Main.qml Background.jpg Components Assets $out/usr/share/sddm/themes/sugar-dark
+    ln -s ${configFile} $out/usr/share/sddm/themes/sugar-dark/theme.conf
+  '';
+}