{
  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
  outputs = {
    nixpkgs,
    self,
    ...
  }: let
    system = "x86_64-linux";
    pkgs = nixpkgs.legacyPackages.${system};
  in {
    packages.${system} = {
      bootler = pkgs.callPackage ./bootler/package.nix {};
      twasm = pkgs.callPackage ./twasm/package.nix {
        bootler = self.packages.${system}.bootler;
      };
    };
    devShells.${system}.default = pkgs.mkShell {
      inputsFrom = [
        self.packages.${system}.bootler
        self.packages.${system}.twasm
      ];
    };
  };
}