this derivation will be built:
  /nix/store/qavx9ikfnhw2v6w8ip7jirfigdgmqbsa-iozone-3.493.drv
these 2 paths will be fetched (1021.9 KiB download, 3.1 MiB unpacked):
  /nix/store/5ll5ivg05pvrs8ly9r091jxs30d37v03-gnuplot-5.4.5
  /nix/store/3l53xs3b6m5rdhgg0afvzp42ribw6227-libcerf-2.1