anchor.diff:    
     makeDeb =
       system: diskImageFun: prio:
  -    { tarball ? jobs.tarball {}
  -    }:
   
       with import nixpkgs {inherit system;};
   
       releaseTools.debBuild {
         name = "nix-deb";
  -      src = tarball;
  +      src = jobs.tarball;
         diskImage = diskImageFun vmTools.diskImages;
         memSize = 1024;
  -      meta = { schedulingPriority = toString prio; };
  +      meta.schedulingPriority = prio;
         configureFlags = "--sysconfdir=/etc";
         debRequires = ["curl"];
       };
  
positive.code: 
    makeRPM = 
      system: diskImageFun: prio:
      { tarball ? jobs.tarball {}
      }:
  
      with import nixpkgs {inherit system;};
  
      releaseTools.rpmBuild rec {
        name = "nix-rpm-${diskImage.name}";
        src = tarball;
        diskImage = diskImageFun vmTools.diskImages;
        memSize = 1024;
        meta = { schedulingPriority = toString prio; };
      };
  
  
  
negative.code: { nix ? {outPath = ./.; rev = 1234;}
  , nixpkgs ? ../nixpkgs
  , officialRelease ? false
  }:
  
  let
  
  