anchor.diff:      else
         "#pandoc_cmd=pandoc";
     in ''
  -    mkdir -p $out/{bin,share/man/man1,share/bash-completion/completions}
  +    mkdir -p $out/{bin,share/man/man1,share/bash-completion/completions,share/zsh/site-functions}
       substituteInPlace memo \
  -      --replace "ack_cmd=ack"       "ack_cmd=${silver-searcher}/bin/ag" \
  +      --replace "ack_cmd=ack"       "ack_cmd=${ag}/bin/ag" \
         --replace "tree_cmd=tree"     "tree_cmd=${tree}/bin/tree" \
         --replace "man_cmd=man"       "man_cmd=${man}/bin/man" \
         --replace "pandoc_cmd=pandoc" "${pandocReplacement}"
       mv memo $out/bin/
       mv doc/memo.1 $out/share/man/man1/memo.1
  -    mv completion/memo.bash $out/share/bash-completion/completions/memo.sh
  +    mv completion/bash/memo.sh $out/share/bash-completion/completions/memo.sh
  +    mv completion/zsh/_memo    $out/share/zsh/site-functions/_memo
     '';
   
     meta = {
  
positive.code: { fetchFromGitHub, silver-searcher, tree, man, stdenv,
    pandocSupport ? true, pandoc ? null
    , ... }:
  
  
negative.code: 
    name = "memo-${version}";
  
    version = "0.5";
  
    src = fetchFromGitHub {
      owner  = "mrVanDalo";
      repo   = "memo";
      rev    = "${version}";
      sha256 = "1kq8hmq4lgvkk717nhmdryr90g61xm0jm7y8dzya8jsxsn531gm8";
    };
  
    installPhase = let
  