this derivation will be built:
  /nix/store/f2lhjd35abjbc4gzr8gy1r525pzp8zxz-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/f2lhjd35abjbc4gzr8gy1r525pzp8zxz-bcachefs-module-7.0.0-39-generic.drv'...