The series add file-homedir-perl to RDEPENDS for groff as
glilypond rdepends on File/HomeDir.pm provided by file-homedir-perl
Isn't lilypond the music score layout tool? This seems very specialist. I suggest adding the new recipes to meta-perl, and then if someone does want to use it then the requirements are available.
Unless you're only hitting this because of testing, in which case I'd suggest skipping this test.