Guile 2 users: you need to clear the compilation cache

[Jean Abou Samra]

Hi,

https://gitlab.com/lilypond/lilypond/-/merge_requests/1127
is about to be merged, so a heads-up for everyone using
Guile 2 and byte-compilation: if you get weird errors about
a "wrong number of arguments to markup-lambda", you need
to clear Guile's byte-compilation cache in
out/share/lilypond/current/guile/. As far as I understand,
this is because it does not recompile files using
a macro when the macro changes in spite of having relied
on the macro definition for the compilation, so at execution
everything goes wrong.

Regards,
Jean