GNU LilyPond Server 2.27.1
Processing `/tmp/lyp/wrappers/hacklily.ly'
Parsing...
/tmp/lyp/wrappers/hacklily.ly:1: warning: no \version statement found, please add

\version "2.27.1"

for future compatibility
Interpreting music...
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
Layout output to `hacklily.svg'...
Layout output to `hacklily.pdf'...