this derivation will be built:
  /nix/store/b8462vlm5ih1mp56rm2ww8x1rh80z5p2-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/b8462vlm5ih1mp56rm2ww8x1rh80z5p2-bcachefs-module-7.0.0-29-generic.drv'...