Using extended mensural notation support for Lilypond

[Noeck]

Hi,

were there changes since "Extended mensural notation support for Lilypond":
https://lists.gnu.org/archive/html/lilypond-devel/2015-02/msg00152.html

Or in other words, can someone please show me how to use it? Is it
usable directly or do I need to patch lilypond somehow? There were some
discussions about including a patch back then, but I don't know if it
happend.

I tried to use the files of the link above but I always get errors like

   error: GUILE signaled an error for the expression beginning here
   #
    (define noteheads-sM1blackbaroque

@Lukas Pietsch: Are you on this list or could you help me to get it working?

Cheers,
Joram