anchor.diff:  
     goPackagePath = "github.com/gopasspw/gopass";
   
  -  nativeBuildInputs = [ makeWrapper ];
  +  nativeBuildInputs = [ installShellFiles makeWrapper ];
   
     src = fetchFromGitHub {
       owner = "gopasspw";
  
positive.code: { stdenv, buildGoPackage, fetchFromGitHub, git, gnupg, xclip, wl-clipboard, makeWrapper }:
  
  buildGoPackage rec {
    pname = "gopass";
  
negative.code:   ] ++ stdenv.lib.optional stdenv.isLinux wl-clipboard);
  
    postInstall = ''
      for shell in bash fish zsh; do
        $bin/bin/gopass completion $shell > gopass.$shell
        installShellCompletion gopass.$shell
      done
    '';
  
    postFixup = ''
  