these 3 derivations will be built:
  /nix/store/kayivxww86ib7df68rwkj4sr46vaz2py-iets-0.2.0.drv
  /nix/store/wgqdx7m6iqacswkahhjas1c411xljvbq-iets-conformance-adapter.drv
  /nix/store/g1di7pfrxj6rg04vajjbvrhcw7j1sqif-nix-conformance-iets.drv