this derivation will be built:
  /nix/store/km4fhh9246mg61scwmm404xq97swmfhn-bcachefs-module-7.0.0-38-generic.drv
building '/nix/store/km4fhh9246mg61scwmm404xq97swmfhn-bcachefs-module-7.0.0-38-generic.drv'...