libcairo2-ocaml-dev 0.6.1+dfsg-5build1 (riscv64 binary) in ubuntu hirsute

 This is an OCaml binding to Cairo, a 2D graphics library with support for
 multiple output devices. Currently supported output targets include
 the X Window System, Quartz, Win32, image buffers, PostScript, PDF,
 and SVG file output.
 .
 This package contains the development libraries you need to use cairo2 in
 the development of OCaml programs.