ea79a830dc
It has been commented-out for some time and now removed in commit 2de3caf, but it seems reliable in past months: https://hydra.nixos.org/job/nixos/trunk-combined/nixos.tests.boot.biosUsb.x86_64-linux/all so I can't see why not re-add it. Close #15690.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.