these 3 derivations will be built:
  /nix/store/6maiknqvwsq1fd4fj1li0k51sk854din-tinc-tincd-c-1.1pre18.drv
  /nix/store/d0yxhfpgn7nyy6ggnrx1c3dp4180xh2j-tinc-sptps-test-c-1.1pre18.drv
  /nix/store/z3yjq5807z1n3cbspfj2kv9hlfsang9h-tincd-test-0.1.0.drv
these 3 paths will be fetched (89.6 KiB download, 261.6 KiB unpacked):
  /nix/store/a91jgcz9c50gq7p886nvhfd7b68sfgq6-iperf-3.21
  /nix/store/c7h8b9wck4d79bgvlz9ggnrhrj8cy2qc-iperf-3.21-dev
  /nix/store/dsbwr9vxx9h4l2gahd427ckl1pgnwm2c-iperf-3.21-lib