this derivation will be built:
  /nix/store/k0hvdv3dqd6is1p83ck2hydvf3ly21jb-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/k0hvdv3dqd6is1p83ck2hydvf3ly21jb-bcachefs-module-7.0.0-39-generic.drv'...