Function elisp-comp has been deprecated, see bug 235442. elisp-compile should be used instead. Patch will follow.
Created attachment 163898 [details, diff] Proposed change for pari-2.3.3.ebuild Patch for 2.3.3, but please apply to all 2.3* ebuilds. The installed files will be identical (except for a changed comment in the header of the .elc files).
Hi Ulrich, Thank you very much for the note and this has been fixed in cvs. Best, Markus