\font\SILmfont={[/usr/local/texlive/2024/texmf-dist/fonts/opentype/public/libertinus-fonts/LibertinusSerif-SemiboldItalic.otf]:+clig;+liga;+tlig}\SILmfont
\def\SILmfontname{Libertinus Serif Semibold Italic}%