anchor.diff:  , lib
   , fetchFromGitHub
   , makeWrapper
  +, installShellFiles
   , coreutils
   , gnused
   , gnugrep
  
positive.code:     mkdir -p $out/bin
      cp bin/* $out/bin/
  
      mkdir -p $out/share/man/man1
      cp man/man1/* $out/share/man/man1/
  
      for i in $out/bin/*; do
        echo "Wrapping $i"
  
negative.code:     (placeholder "out")
    ];
  
    nativeBuildInputs = [ makeWrapper installShellFiles ];
  
    installPhase = ''
      runHook preInstall
  