menuentry "GNU with Linux-Libre 5.12.10" {
  search --label --set nix
  linux /gnu/store/jf7hbvsz1d8jizl9f2hn6lw3pmiy31nz-linux-libre-5.12.10/bzImage --root=nix --system=/gnu/store/va2i24iq0l09591gkqriznx8rvrmfbqp-system --load=/gnu/store/va2i24iq0l09591gkqriznx8rvrmfbqp-system/boot modprobe.blacklist=usbmouse,usbkbd quiet
  initrd /gnu/store/cassib5ra3r3g7pfc6hanb5s9k6nf57c-raw-initrd/initrd.cpio.gz
}