these 4 derivations will be built:
  /nix/store/kadkxscpy569ig5hwjfyd5cbw4w86qaz-iets-0.1.0.drv
  /nix/store/mikpsarxp582hnfb82f5gviyg04i03fj-iets-fuzz-diff-0.0.0.drv
  /nix/store/a6grj2kyravldw45xv7jjw0n6hynbf41-iets-conformance-adapter.drv
  /nix/store/p4sg78q5br524c1wbf9b0mxfzdj33ngg-nix-conformance-iets.drv