these 4 derivations will be built:
  /nix/store/jp69yc94bam5fpq85myjl7qvq1dbfl2l-iets-0.1.0.drv
  /nix/store/mdclblkdky3anyg4pn18ndblcd55m708-iets-fuzz-diff-0.0.0.drv
  /nix/store/bd4p27c4lvi895nrn6fqbrwp252qnixw-iets-conformance-adapter.drv
  /nix/store/jp4imwicdyq39j7nr71zwka36534h4ka-nix-conformance-iets.drv