{
  description = "A very basic flake";

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

  outputs = { self, nixpkgs, flake-utils }: 
    flake-utils.lib.eachDefaultSystem (system:
      let 
        pkgs = nixpkgs.legacyPackages.${system};
        test-command = ''deno test --unstable  --allow-read=tests .'';
        test =  pkgs.stdenv.mkDerivation {
          name = "test";
          src = ./.;
          buildInputs = [pkgs.deno];
          buildPhase = ''
            export DENO_DIR=`$tmp`
            deno test --import-map vendor/import_map.json --unstable  --allow-read=tests . > test_results.txt
          '';
          installPhase =  ''
          mv test_results.txt $out
          '';
        };
        swagger-ui-src = pkgs.stdenv.mkDerivation {
          name = "swagger-ui-src";
          src = pkgs.fetchzip {
            url = "https://github.com/swagger-api/swagger-ui/archive/refs/tags/v5.0.0.zip";
            hash = "sha256-M/P/teEMqQ0gW0k/mvsr/VnkzuTI82+OMc8PAxCQAKM=";
          };
          installPhase =  ''
            cp -r dist $out
            '';
        };
        swagger-ui =  pkgs.writeShellApplication {
          name = "swagger-ui";
          runtimeInputs = [swagger-ui-src pkgs.python311];
          text = ''
          exec ${pkgs.python311}/bin/python -m http.server -d ${swagger-ui-src} 7766
          '';
        };
      in {
        packages = {
          test = test;
          swagger-ui = swagger-ui;
        };
        devShells.default = pkgs.mkShell { 
           buildInputs = with pkgs; [deno
                                     hey
                                     psrecord];
        };
      });
}