anchor.diff:        };
         
       build =
  -      { tarball ? jobs.tarball {} }:
  +      { tarball ? jobs.tarball {}
  +      , system ? "x86_64-linux"
  +      }:
         
  +      let
  +        pkgs = import nixpkgs { inherit system; };
  +  
  +        disnixos = import "${pkgs.disnixos}/share/disnixos/testing.nix" {
  +          inherit nixpkgs nixos system;
  +        };
  +      in
         disnixos.buildManifest {
           name = "php-mysql";
   	version = builtins.readFile ./version;
  
positive.code: { nixpkgs ? /etc/nixos/nixpkgs
  , nixos ? /etc/nixos/nixos
  , system ? builtins.currentSystem
  }:
  
  let
    pkgs = import nixpkgs { inherit system; };
    
    disnixos = import "${pkgs.disnixos}/share/disnixos/testing.nix" {
      inherit nixpkgs nixos system;
    };
  
    jobs = rec {
      tarball =
        { php_mysql ? {outPath = ./.; rev = 1234;}
        , officialRelease ? false}:
      
        disnixos.sourceTarball {
          name = "php-mysql";
  	version = builtins.readFile ./version;
  
negative.code:             
      tests = 
  
        let
          pkgs = import nixpkgs {};
    
          disnixos = import "${pkgs.disnixos}/share/disnixos/testing.nix" {
            inherit nixpkgs nixos;
          };
        in
        disnixos.disnixTest {
          name = "php-mysql";        
          tarball = tarball {};
          manifest = build { system = "x86_64-linux"; };
  	networkFile = "deployment/DistributedDeployment/network.nix";
  	testScript =
  	  ''
  