this derivation will be built:
  /nix/store/fyp0cx271km8b47985cmnrvaz61c88wn-bcachefs-module-7.0.0-28-generic-64k.drv
building '/nix/store/fyp0cx271km8b47985cmnrvaz61c88wn-bcachefs-module-7.0.0-28-generic-64k.drv'...