anchor.diff:  
   
       build =
  -      { tarball ? jobs.tarball {}
  -      , system ? "i686-linux"
  -      }:
  +      { system ? "i686-linux" }:
   
  -      with import nixpkgs {inherit system;};
  +      with import nixpkgs { inherit system; };
   
         releaseTools.nixBuild {
           name = "nix";
           src = tarball;
   
  -        buildInputs = [curl perl bzip2 openssl];
  +        buildInputs = [ curl perl bzip2 openssl ];
   
           configureFlags = ''
             --disable-init-state
  
positive.code:   
    makeDeb =
      system: diskImageFun: prio:
      { tarball ? jobs.tarball {}
      }:
  
      with import nixpkgs {inherit system;};
  
      releaseTools.debBuild {
        name = "nix-deb";
        src = tarball;
        diskImage = diskImageFun vmTools.diskImages;
        memSize = 1024;
        meta = { schedulingPriority = toString prio; };
        configureFlags = "--sysconfdir=/etc";
        debRequires = ["curl"];
      };
  
  
  
negative.code:       };
  
  
      coverage =
        with import nixpkgs { system = "x86_64-linux"; };
  
        releaseTools.coverageAnalysis {
          name = "nix-build";
          src = tarball;
  
          buildInputs =
            [ curl perl bzip2 openssl
              # These are for "make check" only:
              graphviz libxml2 libxslt
            ];
  
          configureFlags = ''
            --disable-init-state --disable-shared
  