this derivation will be built:
  /nix/store/mk7xxkng0b2mfjrrh1d7jw659hdlf3bh-bcachefs-module-7.0.0-29-generic.drv
building '/nix/store/mk7xxkng0b2mfjrrh1d7jw659hdlf3bh-bcachefs-module-7.0.0-29-generic.drv'...