I (tremble) would like to see a new version of Macaulay2 in EPEL, one of the requirements for this is an EL build for pari. Would you be willing to add an EL build for pari, or alternatively I can maintain the EL build. I also am willing to co-maintain the EL branch If you have no desire to maintain EL-5 packages you may wish to add yourself to the http://fedoraproject.org/wiki/EPEL/ContributorStatusNo page so that we can simply make the CVS request in future.