Gentoo's Bugzilla –
Attachment 882674 Details for
Bug 922521sci-mathematics/cgal-5.5.2 w/ dev-libs/boost-1.84.0 breaks media-gfx/openscad-2021.01-r4: /usr/include/CGAL/Intersections_3/internal/Plane_3_Triangle_3_intersection.h:144:65: error: ‘prior’ is not a member of ‘boost’; did you mean ‘boost::mpl::prior’?