this derivation will be built:
  /nix/store/ahz1jy87sjj855kaxw1z1j4hsa1k730c-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/ahz1jy87sjj855kaxw1z1j4hsa1k730c-bcachefs-module-7.0.0-34-generic.drv'...