For whatever reason, only this version makes custom fonts available. See: https://github.com/wch/extrafont/issues/32#issuecomment-907556721 https://stackoverflow.com/questions/61204259/how-can-i-resolve-the-no-font-name-issue-when-importing-fonts-into-r-using-ext/68642855#68642855
downgrade_rttf2pt1()