this derivation will be built:
  /nix/store/mr2wb26jkyzn2bm00qba0q85zxaa8hzn-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/mr2wb26jkyzn2bm00qba0q85zxaa8hzn-bcachefs-module-7.0.0-29-generic.drv'...