anchor.diff:        diskImage = (diskImageFun vmTools.diskImageFuns)
           { extraPackages = [ "libdbd-sqlite3-perl" "libsqlite3-dev" "libbz2-dev" "libwww-curl-perl" ]; };
         memSize = 1024;
  -      meta.schedulingPriority = prio;
  +      meta.schedulingPriority = 50;
         configureFlags = "--sysconfdir=/etc";
         debRequires = [ "curl" "libdbd-sqlite3-perl" "libsqlite3-0" "libbz2-1.0" "bzip2" "xz-utils" "libwww-curl-perl" ];
         debMaintainer = "Eelco Dolstra <eelco.dolstra@logicblox.com>";
  
positive.code:       diskImage = (diskImageFun vmTools.diskImageFuns)
          { extraPackages = [ "perl-DBD-SQLite" "perl-devel" "sqlite" "sqlite-devel" "bzip2-devel" "emacs" "perl-WWW-Curl" ]; };
        memSize = 1024;
        meta.schedulingPriority = prio;
        postRPMInstall = "cd /tmp/rpmout/BUILD/nix-* && make installcheck";
      };
  
  
negative.code:   makeRPM_x86_64 = makeRPM "x86_64-linux";
  
    makeRPM =
      system: diskImageFun:
  
      with import <nixpkgs> { inherit system; };
  
  