diff --git a/pkgs/data/themes/layan-kde/default.nix b/pkgs/data/themes/layan-kde/default.nix
deleted file mode 100644
index 2f08b5ccdcaa..000000000000
--- a/pkgs/data/themes/layan-kde/default.nix
+++ /dev/null
@@ -1,61 +0,0 @@
-{
-  stdenv,
-  lib,
-  fetchFromGitHub,
-  kdeclarative,
-  plasma-framework,
-  plasma-workspace,
-  gitUpdater,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "layan-kde";
-  version = "unstable-2023-09-30";
-
-  src = fetchFromGitHub {
-    owner = "vinceliuice";
-    repo = pname;
-    rev = "7ab7cd7461dae8d8d6228d3919efbceea5f4272c";
-    hash = "sha256-Wh8tZcQEdTTlgtBf4ovapojHcpPBZDDkWOclmxZv9zA=";
-  };
-
-  # Propagate sddm theme dependencies to user env otherwise sddm does
-  # not find them. Putting them in buildInputs is not enough.
-  propagatedUserEnvPkgs = [
-    kdeclarative.bin
-    plasma-framework
-    plasma-workspace
-  ];
-
-  postPatch = ''
-    patchShebangs install.sh
-
-    substituteInPlace install.sh \
-      --replace '$HOME/.local' $out \
-      --replace '$HOME/.config' $out/share
-
-    substituteInPlace sddm/*/Main.qml \
-      --replace /usr $out
-  '';
-
-  installPhase = ''
-    runHook preInstall
-
-    name= ./install.sh --dest $out/share/themes
-
-    mkdir -p $out/share/sddm/themes
-    cp -a sddm/Layan* $out/share/sddm/themes/
-
-    runHook postInstall
-  '';
-
-  passthru.updateScript = gitUpdater { };
-
-  meta = with lib; {
-    description = "Flat Design theme for KDE Plasma desktop";
-    homepage = "https://github.com/vinceliuice/Layan-kde";
-    license = licenses.gpl3Only;
-    platforms = platforms.all;
-    maintainers = [ maintainers.romildo ];
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index e2b3420761ff..86be9646e305 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1041,6 +1041,7 @@ mapAliases {
   latencytop = throw "'latencytop' has been removed due to lack of maintenance upstream."; # Added 2024-12-04
   latinmodern-math = lmmath;
   latte-dock = throw "'latte-dock' has been removed, as it is only compatible with Plasma 5, which is EOL"; # Added 2025-08-20
+  layan-kde = throw "'layan-kde' has been removed, as it is only compatible with Plasma 5, which is EOL"; # Added 2025-08-20
   lazarus-qt = lazarus-qt5; # Added 2024-12-25
   leafpad = throw "'leafpad' has been removed due to lack of maintenance upstream. Consider using 'xfce.mousepad' instead"; # Added 2024-10-19
   ledger_agent = ledger-agent; # Added 2024-01-07
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 386a6aaf61c9..71760a537d25 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -11251,8 +11251,6 @@ with pkgs;
     inherit (pantheon) elementary-icon-theme;
   };
 
-  layan-kde = libsForQt5.callPackage ../data/themes/layan-kde { };
-
   inherit (callPackages ../data/fonts/liberation-fonts { })
     liberation_ttf_v1
     liberation_ttf_v2