anchor.diff:  
     rustcMaster = callPackage ../development/compilers/rustc/head.nix {};
     rustc = callPackage ../development/compilers/rustc {
  -    callPackage = newScope ({
  -      procps = if stdenv.isDarwin then darwin.ps else procps;
  -    });
  +    callPackage = newScope ({ });
     };
   
     rustPlatform = rustStable;
  
positive.code: 
    bin_replace_string = callPackage ../development/tools/misc/bin_replace_string { };
  
    binutils = if stdenv.isDarwin then darwin.binutils else binutils-raw;
  
    binutils-raw = callPackage ../development/tools/misc/binutils { inherit noSysDirs; };
  
  
negative.code: 
    hostapd = callPackage ../os-specific/linux/hostapd { };
  
    htop = callPackage ../os-specific/linux/htop { };
  
    # GNU/Hurd core packages.
    gnu = recurseIntoAttrs (callPackage ../os-specific/gnu {
  