We are going to deprecate elisp-comp, see bug 235442, so elisp-compile should be used instead. Patch will follow.
Created attachment 163683 [details, diff] Proposed change for ipython-0.8.4-r1.ebuild Patch for 0.8.4-r1, but please apply to all ebuilds of the package. The installed files will be identical.
Thanks, applied.