anchor.diff:    ### Helper functions.
   
   
  +  inherit lib config getConfig;
  +  
     # Override the compiler in stdenv for specific packages.
     overrideGCC = stdenv: gcc: stdenv //
       { mkDerivation = args: stdenv.mkDerivation (args // { NIX_GCC = gcc; });
  
positive.code: }:
  
  
  let pkgs = rec {
  
    
    ### Symbolic names.
  
negative.code: 
    myEnvFun = import ../misc/my_env;
  
  }; in pkgs
  