anchor.diff:      meta = { platforms = ruby.meta.platforms; } // meta;
   
       passthru = rec {
  -      inherit ruby bundler gems mainGem confFiles envPaths;
  +      inherit ruby bundler gems confFiles envPaths;
   
  -      wrappedRuby =
  -      stdenv.mkDerivation {
  -        name = "wrapped-ruby-${pname}";
  +      wrappedRuby = stdenv.mkDerivation {
  +        name = "wrapped-ruby-${pname'}";
           nativeBuildInputs = [ makeWrapper ];
           buildCommand = ''
             mkdir -p $out/bin
  
positive.code:           require 'bundler/setup'
          '';
          in stdenv.mkDerivation {
            name = "${pname}-interactive-environment";
            nativeBuildInputs = [ wrappedRuby basicEnv ];
            shellHook = ''
              export OLD_IRBRC=$IRBRC
  
negative.code: 
    copyIfBundledByPath = { bundledByPath ? false, ...}@main:
    (if bundledByPath then
        assert gemFiles.gemdir != null; "cp -a ${gemFiles.gemdir}/* $out/" #*/
      else ""
    );
  
  