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

  outputs = { self, nixpkgs, flake-utils }:
    let 
      productVersion = "0.4.1";
      productName = "blockstream-electrs";
      myModule = import ./module.nix { inherit nixpkgs; };
    in
    flake-utils.lib.eachDefaultSystem (system:
      with nixpkgs.legacyPackages.${system}; {

        nixosModules = {
          # add moduleA from flakeA as an output
          # moduleA = flakeA.nixosModules.moduleA;
          default = myModule;
        };

        packages.${productName} = rustPlatform.buildRustPackage {
          name = "${productName}";
          version = "${productVersion}";

          src = lib.cleanSource ./.;

          cargoSha256 = "sha256-d84QNj9SIRUwtlsa9sdYKuYf0oCptdGm7pDs3eGTcBg=";

          preConfigure = ''
            export LIBCLANG_PATH="${llvmPackages.libclang.lib}/lib";
          '';
          nativeBuildInputs = [ cargo clang cmake ];
        };

        defaultPackage = self.packages.${system}.${productName};

        devShell = mkShell {
          inputsFrom = builtins.attrValues self.packages.${system};

          shellHook = ''
            export LIBCLANG_PATH="${llvmPackages.libclang.lib}/lib"
          '';
          # LIBCLANG_PATH="${llvmPackages.libclang.lib}/lib";

          # I'm never quite sure which one to use, but in this case neither
          # result in a proper dev shell
          buildInputs = [ cargo ];
          nativeBuildInputs = [ cargo clang ];
        };

        modules = [
          # Include the module in the system configuration
          myModule
        ];

        # nixosModules.${productName} = ./module.nix;
        # nixosModules.default = nixosModules.${productName};
        # nixosModules.default = { config, pkgs, lib, ... }: {
        #   imports = [ ./module.nix ];
        # };
      });
}