Note that the enso installer failed due to something not right with secure boot. It installed all the files, but grub wouldn't install correctly. I had to boot to and run boot-repair to fix the issue and get #enso to boot on the MacBook
@retroedgetech I am missing this generation of macs. Had one from 2011, probably the best laptop I ever owned. It has drived me through the last years at uni and a good half of grad school, ran Debian for the "last" year of its live. Still working tho.