this derivation will be built:
  /nix/store/629w4nwvzq9hrarwsphp95ch60v91wik-bcachefs-module-7.0.0-34-generic.drv
building '/nix/store/629w4nwvzq9hrarwsphp95ch60v91wik-bcachefs-module-7.0.0-34-generic.drv'...