There is an updated pull request by tornaria against master on the void-packages repository https://github.com/tornaria/void-packages giac https://github.com/void-linux/void-packages/pull/29141 giac: makedepend on mpfr-devel and pari-devel - mpfr is used for arbitrary precision floats, otherwise they are limited to double precision (53 bits ~ 13 digits) - pari is used for number theory functions In addition to the two new makedepends, there is a small patch that fixes one line of test output to match a change in pari. With this commit, make check goes from 12 tests failed to 1 test failed. See #28989. A patch file from https://github.com/void-linux/void-packages/pull/29141.patch is attached