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