this derivation will be built:
  /nix/store/x8lrg31lvzkfp2gr31wh6gymnd6dyxbz-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/x8lrg31lvzkfp2gr31wh6gymnd6dyxbz-bcachefs-module-7.0.0-31-generic.drv'...