acxz [1] filed a orphan request for ignition-math [2]:

This package needs to be updated so that packages which depend on it, i.e. `sdformat`, can be successfully built. The current maintainer has not responded to the flagged status of this package.

[1] https://aur.archlinux.org/account/acxz/ [2] https://aur.archlinux.org/pkgbase/ignition-math/