{
  inputs = {
    nixpkgs.url = "github:matthewcroughan/nixpkgs/mc/riscv-testing";

    # VisionFive ("v1")
    vendor-kernel = {
      url = "github:starfive-tech/linux";
      flake = false;
    };
  };
  outputs = { self, nixpkgs, vendor-kernel, ... }:
    let
      inherit (nixpkgs) lib;
      system = "x86_64-linux";
      pkgs = import nixpkgs { inherit system; overlays = [ self.overlay ]; };
      modules = [
        { nixpkgs.overlays = [ self.overlay ]; }
        "${nixpkgs}/nixos/modules/installer/sd-card/sd-image-riscv64-visionfive-installer.nix"
        ./base.nix
        ./configuration.nix
      ];
    in
    {
      overlay = final: prev: {
        linuxPackages_visionfive = final.linuxPackagesFor (
          (
            final.callPackage ./kernel.nix { inherit vendor-kernel; }
          ).override {
            patches = [];
          }
        );
      };
      legacyPackages.${system} =
        {
          inherit (pkgs.pkgsCross.riscv64.linux) linuxPackages_visionfive;
        };
      images = {
        visionfive-cross = self.nixosConfigurations.visionfive-cross.config.system.build.sdImage;
        visionfive-native = self.nixosConfigurations.visionfive-native.config.system.build.sdImage;

        visionfive2-cross = self.nixosConfigurations.visionfive2-cross.config.system.build.sdImage;
        visionfive2-native = self.nixosConfigurations.visionfive2-native.config.system.build.sdImage;
      };
      nixosConfigurations = {
        visionfive-cross = nixpkgs.lib.nixosSystem {
          system = "${system}";
          modules = modules ++ [
            {
              nixpkgs.crossSystem = {
                system = "riscv64-linux";
              };
            }
          ];
        };
        visionfive-native = nixpkgs.lib.nixosSystem {
          system = "riscv64-linux";
          modules = modules;
        };
      };
    };
}