{
  inputs.flake-utils.url = "github:numtide/flake-utils";
  inputs.biohazard = {
    url = "git+https://bitbucket.org/ustenzel/biohazard/";
    flake = false;
  };

  outputs = { self, nixpkgs, flake-utils, biohazard }:
    flake-utils.lib.eachDefaultSystem (system:
      let pkgs = nixpkgs.legacyPackages.${system};
      in {
        devShell = pkgs.callPackage ./shell.nix { biohazardSrc = biohazard; };
        defaultPackage = pkgs.callPackage ./default.nix { biohazardSrc = biohazard; };
      });
}