these 3 derivations will be built:
  /nix/store/ndyifm54vpgyyd77spzz0vqnjshjzk34-source.drv
  /nix/store/q320010f6sl6cr7wzk8ziqr9h3yxh5ji-iets-deps-0.2.0.drv
  /nix/store/3zvb3xngqgha6n8gfpmnra6gjwz3665r-iets-doc-0.2.0.drv