{
  description = "llama.cpp with Vulkan";
  
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    devshell.url = "github:numtide/devshell";
    devshell.inputs.nixpkgs.follows = "nixpkgs";
  };
  
  outputs = { nixpkgs, devshell, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        
        # llama.cpp с Vulkan
        llama-cpp-vulkan = pkgs.llama-cpp.override {
          vulkanSupport = true;
          openclSupport = false;  # Только Vulkan
          cmakeFlags = [
            "-DGGML_VULKAN=ON"
            "-DCMAKE_BUILD_TYPE=Release"
          ];
        };
        
      in {
        devShells.default = devshell.legacyPackages.${system}.mkShell {
          packages = [
            # llama.cpp с Vulkan
            llama-cpp-vulkan
            
            # Build tools
            pkgs.gcc
            pkgs.cmake
            pkgs ninja
            pkgs.pkg-config
            
            # Vulkan
            pkgs.vulkan-loader
            pkgs.vulkan-tools
            pkgs.vulkan-validation-layers
            pkgs.libGL
            pkgs.xorg.libX11
            pkgs.xorg.libXrandr
            pkgs.wayland
            
            # Utils
            pkgs.git
            pkgs.htop
            pkgs.neofetch
          ];
          
          commands = [
            {
              package = llama-cpp-vulkan;
              help = "llama.cpp Vulkan binary";
              name = "llama-cli";
            }
            {
              package = pkgs.vulkan-tools;
              help = "Vulkan info";
            }
          ];
          
          env = {
            VK_LAYER_PATH = "${pkgs.vulkan-validation-layers}/share/vulkan/explicit_layer.d";
            LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath [
              pkgs.vulkan-loader
              pkgs.libGL
              pkgs.xorg.libX11
            ];
          };
        };
      });
}