this derivation will be built:
  /nix/store/1b87bfx2nszxpzdqc1b1w6jsdhyc6gqd-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/1b87bfx2nszxpzdqc1b1w6jsdhyc6gqd-bcachefs-module-7.0.0-39-generic.drv'...