this derivation will be built:
  /nix/store/f38ah9j7b3cq3w9wk6sgb29azwfdww4y-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/f38ah9j7b3cq3w9wk6sgb29azwfdww4y-bcachefs-module-7.0.0-39-generic.drv'...