Now that we have media-gfx/alembic in the tree, I'd like to ask to add an alembic USE flag to add import / export support for alembic (.abc) files to blender.
Blender supports this file format for at least since version 2.79, please see also https://wiki.blender.org/wiki/Reference/Release_Notes/2.79/Alembic
I managed to include this in my overlay and can prepare a PR if the change get's approved. I tested it by importing the Emily 2.1 scene file from the digitalhuman project (see http://gl.ict.usc.edu/Research/DigitalEmily2/).
Created attachment 548400 [details]
ebuild for updated blender
My current blender ebuild patched to add media-gfx/alembic support
Created attachment 579970 [details]
Diff of the ebuild w/ respect to the current blender-2.79b-r1.ebuild
Due to no response so far, I'm going to prepare a PR for this.