this derivation will be built:
  /nix/store/xrl7lw6hwhwaka7cg7wpkqhdbczc74qm-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/xrl7lw6hwhwaka7cg7wpkqhdbczc74qm-bcachefs-module-7.0.0-29-generic.drv'...