There is an updated pull request by ndowens against master on the void-packages repository

https://github.com/ndowens/void-packages gmsh-dep
https://github.com/void-linux/void-packages/pull/17583

gmsh: Update to 4.5.0 ; Added build_option fltk
Add build_option fltk so by default a lot less dependencies are needed unless one wants to build
a fltk GUI. Also add libgfortran to depends as gmsh links
to the library. Closes: #17086

Signed-off-by: Nathan Owens <ndowens04@gmail.com>

A patch file from https://github.com/void-linux/void-packages/pull/17583.patch is attached