this derivation will be built:
  /nix/store/7pcb4913dgyfbnnndx14hp3n4f9x7619-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/7pcb4913dgyfbnnndx14hp3n4f9x7619-bcachefs-module-7.0.0-38-generic.drv'...