{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  };

  outputs =
    { self, nixpkgs }:
    let
      pkgs = nixpkgs.legacyPackages.x86_64-linux;
      nativeBuildInputs = with pkgs; [
        pkg-config
        m4
      ];
      buildInputs = [ pkgs.gmp ];
    in
    with pkgs;
    {
      packages.x86_64-linux.default = rustPlatform.buildRustPackage {
        name = "dollcode-cli";

        src = ./.;

        cargoLock.lockFile = ./Cargo.lock;

        buildNoDefaultFeatures = true;
        buildFeatures = [ "cli" ];

        inherit nativeBuildInputs buildInputs;
      };

      devShells.x86_64-linux.default = mkShell {
        packages = [
          cargo
          clippy
          rustc
        ];
        inherit nativeBuildInputs buildInputs;
      };
    };
}