anchor.diff:  
     nativeBuildInputs = [
       pkg-config
  -  ] ++ lib.optionals (!brokenPandoc) [
       pandoc
     ];
   
  
positive.code: 
    subPackages = [ "." "gocryptfs-xray" "contrib/statfs" ];
  
    postBuild = lib.optionalString (!brokenPandoc) ''
      pushd Documentation/
      mkdir -p $out/share/man/man1
      # taken from Documentation/MANPAGE-render.bash
  
negative.code: , pkg-config
  , libfido2
  }:
  
  buildGoModule rec {
    pname = "gocryptfs";
  