anchor.diff:        };
       in
         (fillDiskWithDebs {
  -        inherit name fullName size postInstall;
  +        inherit name fullName size postInstall QEMU_OPTS memSize;
           debs = import expr {inherit fetchurl;};
         }) // {inherit expr;};
   
  
positive.code:      strongly connected components.  See deb/deb-closure.nix. */
  
    fillDiskWithDebs =
      { size ? 4096, debs, name, fullName, postInstall ? null, createRootFS ? defaultCreateRootFS }:
  
      runInLinuxVM (stdenv.mkDerivation {
        inherit name postInstall;
  
        debs = (lib.intersperse "|" debs);
  
  
negative.code:   makeImageFromDebDist =
      { name, fullName, size ? 4096, urlPrefix
      , packagesList ? "", packagesLists ? [packagesList]
      , packages, extraPackages ? [], postInstall ? ""
      , QEMU_OPTS ? "", memSize ? 512 }:
  
      let
        expr = debClosureGenerator {
  