There is a new pull request by mvf against master on the void-packages repository

https://github.com/mvf/void-packages pr/blender-alembic
https://github.com/void-linux/void-packages/pull/23498

blender: enable alembic support
Smoke-tested (export and import simple mesh) on x86_64. Fixes #23112

A patch file from https://github.com/void-linux/void-packages/pull/23498.patch is attached