anchor.diff:      inherit stringsWithDeps lib stdenv writeScript fetchurl;
     };
   
  -  builderDefsPackage = expr: lib.sumArgs 
  +  builderDefsPackage = expr: lib.composedArgs 
       (((builderDefs null).builderDefsPackage builderDefs) expr);
   
     stringsWithDeps = import ../lib/strings-with-deps.nix {
  
positive.code: 
    makeWrapper = makeSetupHook ../build-support/make-wrapper/make-wrapper.sh;
  
    makeModulesClosure = {kernel, rootModules}: import ../build-support/kernel/modules-closure.nix {
      inherit stdenv module_init_tools kernel rootModules;
    };
  
    # Run the shell command `buildCommand' to produce a store object
    # named `name'.  The attributes in `env' are added to the
  
negative.code:       [(getConfig ["kernel" "addConfig"] "")];
    };
  
    customKernel = lib.sumArgs (import ../os-specific/linux/kernel/linux.nix) {
      inherit fetchurl stdenv perl mktemp module_init_tools lib;
    };
  
    kqemuFun = builderDefsPackage (selectVersion ../os-specific/linux/kqemu "1.3.0pre11") {
      inherit builderDefs;
    };
  
    # No finished expression is provided - pick your own kernel
  