vulkan-hdr-layer-kwin6: init at v0.1

https://github.com/Zamundaaa/VK_hdr_layer

Enables HDR support for Vulkan clients (such as mpv) on kwin6.

This is likely to be a temporary solution until Wayland upstream
adopts the necessary protocols, however that has been in the works for
many years:

https://gitlab.freedesktop.org/wayland/wayland-protocols/-/merge_requests/14

For the time being, this provides a path for users to experiment with
HDR, share feedback and hopefully make progress.

Arch provides a similar package:
https://aur.archlinux.org/packages/vk-hdr-layer-kwin6-git

pkgs/by-name/vu/vulkan-hdr-layer-kwin6/package.nix

@@ -0,0 +1,50 @@
+{
+  lib,
+  stdenv,
+  cmake,
+  fetchFromGitHub,
+  libX11,
+  meson,
+  ninja,
+  pkg-config,
+  vulkan-headers,
+  vulkan-loader,
+  wayland-scanner,
+  wayland,
+}:
+
+stdenv.mkDerivation rec {
+  pname = "vulkan-hdr-layer-kwin6";
+  version = "0-unstable-2024-10-19";
+
+  nativeBuildInputs = [
+    meson
+    ninja
+    pkg-config
+    cmake
+  ];
+
+  buildInputs = [
+    vulkan-headers
+    vulkan-loader
+    libX11
+    wayland-scanner
+    wayland
+  ];
+
+  src = fetchFromGitHub {
+    owner = "Zamundaaa";
+    repo = "VK_hdr_layer";
+    rev = "e173f2617262664901039e3c821929afce05d2c1";
+    hash = "sha256-hBxRwbn29zFeHcRpfMF6I4piSASpN2AvZY0ci5Utj4U=";
+    fetchSubmodules = true;
+  };
+
+  meta = {
+    description = "Vulkan Wayland HDR WSI Layer (Xaver Hugl's fork for KWin 6)";
+    homepage = "https://github.com/Zamundaaa/VK_hdr_layer";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ d4rk ];
+  };
+}