this derivation will be built:
  /nix/store/fg5qlsphr3i6vmq8d7knwiz6jaqpydqb-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/fg5qlsphr3i6vmq8d7knwiz6jaqpydqb-bcachefs-module-7.0.0-29-generic.drv'...