disallow PARI 2.15 from the system, until giac is fixed #34496
Description
disallow PARI 2.15 from the system, until giac is fixed
Was: Upgrade to PARI 2.15. (dupe of #34537)
CC: @antonio-rojas @kiwifb @mkoeppe
Component: packages: standard
Keywords: upgrade, pari
Author: Dima Pasechnik
Branch/Commit: 1e2f16b
Reviewer: Matthias Koeppe
Issue created by migration from https://trac.sagemath.org/ticket/34496