anchor.diff:    };
   
     stagesLinux = [
  -    ({}: stage0)
  +    baseCase
  +    stage0
       stage1
       stage2
       stage3
  
positive.code:           libc = prevStage.glibc;
            inherit (prevStage) binutils coreutils gnugrep;
            name = name;
            stdenv = stage0.stdenv;
          };
  
          extraAttrs = {
  
negative.code: 
    # Build a dummy stdenv with no GCC or working fetchurl.  This is
    # because we need a stdenv to build the GCC wrapper and fetchurl.
    stage0 = prevStage: stageFun prevStage {
      name = null;
  
      overrides = self: super: {
        # We thread stage0's stdenv through under this name so downstream stages
        # can use it for wrapping gcc too. This way, downstream stages don't need
        # to refer to this stage directly, which violates the principle that each
        # stage should only access the stage that came before it.
        ccWrapperStdenv = self.stdenv;
        # The Glibc include directory cannot have the same prefix as the
        # GCC include directory, since GCC gets confused otherwise (it
        # will search the Glibc headers before the GCC headers).  So
  