this derivation will be built:
  /nix/store/y5avjvkxwb2sqm9bp5lcs3jz66692cvl-bcachefs-module-7.0.0-30-generic.drv
building '/nix/store/y5avjvkxwb2sqm9bp5lcs3jz66692cvl-bcachefs-module-7.0.0-30-generic.drv'...