this derivation will be built:
  /nix/store/4w5byw7qahvz8agk9ns2z4y4l4kwfgr3-bcachefs-module-7.0.0-31-generic.drv
building '/nix/store/4w5byw7qahvz8agk9ns2z4y4l4kwfgr3-bcachefs-module-7.0.0-31-generic.drv'...