this derivation will be built:
  /nix/store/7a7fk7gfipic1ns01g0pfsdy51fdl73s-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/7a7fk7gfipic1ns01g0pfsdy51fdl73s-bcachefs-module-7.0.0-34-generic.drv'...