{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
        llvmPkgs = pkgs.llvmPackages_19;
      in
      {
        devShells.default = pkgs.mkShell {
          name = "mesa-crocus-opencl";

          packages = with pkgs; [
            # build tools
            meson
            ninja
            pkg-config
            cmake
            python3
            python3Packages.packaging

            # LLVM stack
            llvmPkgs.llvm.dev
            llvmPkgs.clang
            llvmPkgs.libclc

            # Rust
            rust-bindgen
            rustc
            cargo

            # Mesa deps
            libdrm
            expat
            zlib
            zstd
            glslang
            libffi
            elfutils
          ];

          shellHook = ''
            export PKG_CONFIG_PATH=${pkgs.llvmPackages_19.libclc}/share/pkgconfig:$PKG_CONFIG_PATH
          '';
        };
      }
    );
}