diff --git a/kde-frameworks/kwindowsystem/Manifest b/kde-frameworks/kwindowsystem/Manifest
index cb528fe9e7042..a2673e6c4d019 100644
--- a/kde-frameworks/kwindowsystem/Manifest
+++ b/kde-frameworks/kwindowsystem/Manifest
@@ -1,3 +1,4 @@
 DIST kwindowsystem-5.116.0.tar.xz 2406688 BLAKE2B 99bb7ec3d3302543bab77a526c860f8c13233c803b92e15a225fbecdd74ca2498b0f9a58a1c310c84eb81b07cf8b586dfb0388cc45da65c38d501a774ecbe637 SHA512 1b8d45ee0a09161b45f62e6ba4f200f3c2ad937c20eedc03bf65c3a788a5311727ec2a1634db9e1b1208b8ecbe4158273d11c97924a86059a06d3a24d1201157
 DIST kwindowsystem-6.10.0.tar.xz 2385816 BLAKE2B e4b604d291618ffdef4ab06452fe588bdce5c91dfd9cab6c052c1bd396040235648be4e0fe106939cf3c1a3ad2e7681218adc78bc05f5aafe66296c2613680a1 SHA512 a336613e76a628f44ba050668b675ee663a919de32de254425611154e5d3da815b3d1ab61277812e41165cb962e76469f889b1ec9d970301cc0f9ee3e8b785f5
 DIST kwindowsystem-6.11.0.tar.xz 2385564 BLAKE2B 1f3d5effe9c7a8c3a77109bbcdfa78e5842941b5856a7ef3f01c245ec7187f9ac173427db03cd00be10fdf8ee6ae28baee6debc45552572214c3425fc8218e4a SHA512 2e2a523f1437a3044627e038d13f53722ba7ec2214ad9166e12bdf0c65fc8ba0f45fd3fe6db8e52a0df0a139f6f0a3c373c3d834c4dc02ec48f49625949dbe21
+DIST kwindowsystem-6.12.0.tar.xz 2385916 BLAKE2B 3fffb795f52e731ea89043b1ff83c7a5c6240209a4b7dd10e351eca91af4a34faab2468d76d8af40e703bb4da870462d8cfb8b1f41c20d04a6421a39488b6c58 SHA512 fd76b3e52f66125370ee19eeb8745ee969ad68589021a0011d215d6b76058f48f7a680339150c9f9b267295bdabf3e604b9a6969ad06c9adab56e1d1eab17b89
diff --git a/kde-frameworks/kwindowsystem/kwindowsystem-6.12.0.ebuild b/kde-frameworks/kwindowsystem/kwindowsystem-6.12.0.ebuild
new file mode 100644
index 0000000000000..3b2345106ee51
--- /dev/null
+++ b/kde-frameworks/kwindowsystem/kwindowsystem-6.12.0.ebuild
@@ -0,0 +1,52 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+QTMIN=6.7.2
+inherit ecm frameworks.kde.org
+
+DESCRIPTION="Framework providing access to properties and features of the window manager"
+
+LICENSE="|| ( LGPL-2.1 LGPL-3 ) MIT"
+KEYWORDS="~amd64 ~arm64 ~loong ~ppc64 ~riscv ~x86"
+IUSE="wayland X"
+
+RESTRICT="test"
+
+# slot op: Uses Qt6::GuiPrivate for qtx11extras_p.h
+# slot op: Uses private/qwayland*_p.h headers
+# x11-base/xorg-proto: X11/Xlib.h included in public header kkeyserver.h,
+#   req. by KF6WindowSystemConfig.cmake; see also bug #939177
+RDEPEND="
+	>=dev-qt/qtbase-${QTMIN}:6[gui,wayland?]
+	>=dev-qt/qtdeclarative-${QTMIN}:6
+	wayland? ( >=dev-qt/qtwayland-${QTMIN}:6= )
+	X? (
+		>=dev-qt/qtbase-${QTMIN}:6=[gui,X]
+		x11-base/xorg-proto
+		x11-libs/libX11
+		x11-libs/libXfixes
+		x11-libs/libxcb
+		x11-libs/xcb-util-keysyms
+	)
+"
+DEPEND="${RDEPEND}
+	test? ( >=dev-qt/qtbase-${QTMIN}:6[widgets] )
+	wayland? (
+		dev-libs/plasma-wayland-protocols
+		>=dev-libs/wayland-protocols-1.21
+	)
+"
+BDEPEND=">=dev-qt/qttools-${QTMIN}:6[linguist]"
+
+DOCS=( docs/README.kstartupinfo )
+
+src_configure() {
+	local mycmakeargs=(
+		-DKWINDOWSYSTEM_WAYLAND=$(usex wayland)
+		-DKWINDOWSYSTEM_X11=$(usex X)
+	)
+
+	ecm_src_configure
+}