On 11/10, Karsten Reincke wrote: > I've just tried to test your version. But it does not work, because my > LilyPond version 2.18.2, offered by Ubuntu 19.10, does not contain a > function \overlay. I have the hope, that the coming LTS Ubuntu version > 20.04 will contain the newer 2.19.x - LilyPond.
Ubuntu is based on snapshots of Debian's unstable branch. Lilypond 2.19.83 is currently in Debian's experimental branch, but the unstable branch has 2.18.2, and this will presumably remain the case until Lilypond 2.20 is released. If Lilypond 2.20 is released in time to make it into Debian unstable before Ubuntu freezes its package versions for 20.04, then Lilypond 2.20 might be available in the next Ubuntu LTS, but otherwise it will still have 2.18.2. The easiest way to install Lilypond 2.19.83 on a Debian-based distro like Ubuntu is probably to grab the deb from Debian experimental. Assuming that your architecture is amd64: $ wget http://ftp.us.debian.org/debian/pool/main/l/lilypond/lilypond_2.19.83-1~exp1_amd64.deb $ sudo dpkg -i lilypond_2.19.83-1~exp1_amd64.deb
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