these 2 derivations will be built:
  /nix/store/bl1l7ypx2dfi6ydwr895nd3af146x4x2-iets-conformance-adapter.drv
  /nix/store/1lflpyskxfcxnaf0wk1fbvgv6sczxbxn-nix-conformance-iets.drv