this derivation will be built:
  /nix/store/l701zqm524nmq4ndp71kykd9jpcyphrl-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/l701zqm524nmq4ndp71kykd9jpcyphrl-bcachefs-module-7.0.0-39-generic.drv'...