Use cached nix packages from unstable channel

shell.nix

@@ -1,149 +1,67 @@
-### Vulkan packages in official nix repo are still using version 1.3.296.0 while 1.4.305 or 1.4.304.0 is required for this package, so we have to use a custom vulkan packages to build shadPS4.
+with import (fetchTarball "https://github.com/nixos/nixpkgs/archive/cfd19cdc54680956dc1816ac577abba6b58b901c.tar.gz") { };
 
-with import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/606996d74f6e2a12635d41c1bf58bfc7ea3bb5ec.tar.gz") { };
-
-let
-  vulkanLoaderCustom = pkgs.stdenv.mkDerivation rec {
-    pname = "vulkan-loader";
-    version = "1.4.305";
-
-    src = fetchFromGitHub {
-      owner = "KhronosGroup";
-      repo = "Vulkan-Loader";
-      rev = "v${version}";
-      hash = "sha256-nAxb2WH4FUNyZ0daO1lEcuuIbqLTjNDsc95m3NIY8F8=";
-    };
-
-    nativeBuildInputs = [ cmake pkg-config ];
-    buildInputs = [ vulkanHeadersCustom ]
-      ++ lib.optionals stdenv.hostPlatform.isLinux [ xorg.libX11 xorg.libxcb xorg.libXrandr wayland ];
-
-    cmakeFlags = [ "-DCMAKE_INSTALL_INCLUDEDIR=${vulkanHeadersCustom}/include" ]
-      ++ lib.optional stdenv.hostPlatform.isDarwin "-DSYSCONFDIR=${moltenvk}/share"
-      ++ lib.optional stdenv.hostPlatform.isLinux "-DSYSCONFDIR=${addDriverRunpath.driverLink}/share"
-      ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "-DUSE_GAS=OFF";
-
-    outputs = [ "out" "dev" ];
-
-    doInstallCheck = true;
-
-    installCheckPhase = ''
-      vulkan_path="${vulkanHeadersCustom}/include"
-      stripped_path="''${vulkan_path#/nix/store/}"
-      grep -q "$stripped_path" $dev/lib/pkgconfig/vulkan.pc || {
-        echo vulkanHeadersCustom include directory not found in pkg-config file
-        exit 1
-      }
-    '';
-
-    passthru = {
-      tests.pkg-config = testers.hasPkgConfigModules {
-        package = finalAttrs.finalPackage;
-      };
-    };
-  };
-
-  vulkanUtilsCustom = pkgs.stdenv.mkDerivation rec {
-    pname = "vulkan-utility-libraries";
-    version = "1.4.305";
-
-    src = fetchFromGitHub {
-      owner = "KhronosGroup";
-      repo = "Vulkan-Utility-Libraries";
-      rev = "vulkan-sdk-${version}";
-      hash = "sha256-YBket/4gsAkkr1eTQXz8lXGyQHtY5mm8jLPKAqSaawM=";
-    };
-
-    nativeBuildInputs = [
-      cmake
-      python3
-    ];
-    buildInputs = [ vulkanHeadersCustom ];
-  };
-  vulkanHeadersCustom = pkgs.stdenv.mkDerivation rec {
-    pname = "vulkan-headers";
-    version = "1.4.305";
-    src = pkgs.fetchFromGitHub {
-      owner = "KhronosGroup";
-      repo = "Vulkan-Headers";
-      rev = "v${version}";
-      hash = "sha256-r5tgUxu+ZGzxBGAfLxX1bW4YshRdqCwxVQJsoQrtY/Y=";
-    };
-
-    cmakeFlags = lib.optionals stdenv.hostPlatform.isDarwin [ "-DVULKAN_HEADERS_ENABLE_MODULE=OFF" ];
-
-    nativeBuildInputs = [
-      pkgs.cmake
-      pkgs.ninja
-    ];
-  };
-
-  llvmPackages = pkgs.llvmPackages_18;
-
-  overlay = self: super: {
-    vulkan-headers = vulkanHeadersCustom;
-    vulkan-utility-libraries = vulkanUtilsCustom;
-    vulkan-loader = vulkanLoaderCustom;
-  };
-in
-
-with import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/606996d74f6e2a12635d41c1bf58bfc7ea3bb5ec.tar.gz") { overlays = [ overlay ]; };
-
-llvmPackages.stdenv.mkDerivation {
+pkgs.mkShell {
   name = "shadps4-build-env";
+
   nativeBuildInputs = [
-    clang
-    cmake
-    pkg-config
-    git
+    pkgs.llvmPackages_18.clang
+    pkgs.cmake
+    pkgs.pkg-config
+    pkgs.git
   ];
+
   buildInputs = [
-    alsa-lib
-    libpulseaudio
-    openal
-    openssl
-    zlib
-    libedit
-    udev
-    libevdev
-    SDL2
-    jack2
-    sndio
-    qt6.qtbase
-    qt6.qttools
-    qt6.qtmultimedia
-    vulkanHeadersCustom
-    vulkanUtilsCustom
-    ffmpeg
-    fmt
-    glslang
-    libxkbcommon
-    wayland
-    xorg.libxcb
-    xorg.xcbutil
-    xorg.xcbutilkeysyms
-    xorg.xcbutilwm
-    sdl3
-    stb
-    qt6.qtwayland
-    wayland
-    wayland-protocols
-    libxkbcommon
+    pkgs.alsa-lib
+    pkgs.libpulseaudio
+    pkgs.openal
+    pkgs.openssl
+    pkgs.zlib
+    pkgs.libedit
+    pkgs.udev
+    pkgs.libevdev
+    pkgs.SDL2
+    pkgs.jack2
+    pkgs.sndio
+    pkgs.qt6.qtbase
+    pkgs.qt6.qttools
+    pkgs.qt6.qtmultimedia
+
+    pkgs.vulkan-headers
+    pkgs.vulkan-utility-libraries
+    pkgs.vulkan-tools
+
+    pkgs.ffmpeg
+    pkgs.fmt
+    pkgs.glslang
+    pkgs.libxkbcommon
+    pkgs.wayland
+    pkgs.xorg.libxcb
+    pkgs.xorg.xcbutil
+    pkgs.xorg.xcbutilkeysyms
+    pkgs.xorg.xcbutilwm
+    pkgs.sdl3
+    pkgs.stb
+    pkgs.qt6.qtwayland
+    pkgs.wayland-protocols
   ];
+
   shellHook = ''
+    echo "Entering shadPS4 dev shell"
     export QT_QPA_PLATFORM="wayland"
-    export QT_PLUGIN_PATH="${qt6.qtwayland}/lib/qt-6/plugins:${qt6.qtbase}/lib/qt-6/plugins"
-    export QML2_IMPORT_PATH="${qt6.qtbase}/lib/qt-6/qml"
-    export CMAKE_PREFIX_PATH="${vulkanHeadersCustom}:$CMAKE_PREFIX_PATH"
+    export QT_PLUGIN_PATH="${pkgs.qt6.qtwayland}/lib/qt-6/plugins:${pkgs.qt6.qtbase}/lib/qt-6/plugins"
+    export QML2_IMPORT_PATH="${pkgs.qt6.qtbase}/lib/qt-6/qml"
+    export CMAKE_PREFIX_PATH="${pkgs.vulkan-headers}:$CMAKE_PREFIX_PATH"
 
-    # NVIDIA/OpenGL
-    export LD_LIBRARY_PATH="${lib.makeLibraryPath [ libglvnd ]}:$LD_LIBRARY_PATH"
+    # OpenGL
+    export LD_LIBRARY_PATH="${
+      pkgs.lib.makeLibraryPath [
+        pkgs.libglvnd
+        pkgs.vulkan-tools
+      ]
+    }:$LD_LIBRARY_PATH"
 
-    export QT_PLUGIN_PATH="${qt6.qtbase}/lib/qt-6/plugins"
-    export QT_QPA_PLATFORM="xcb"
-    export LDFLAGS="-L${llvmPackages.libcxx}/lib -lc++"
+    export LDFLAGS="-L${pkgs.llvmPackages_18.libcxx}/lib -lc++"
     export LC_ALL="C.UTF-8"
     export XAUTHORITY=${builtins.getEnv "XAUTHORITY"}
   '';
-
 }