these 3 derivations will be built:
  /nix/store/k9iqfxac139y8bki9qa7qygbcml23y2c-treefmt.toml.drv
  /nix/store/af0wliql68dfz6d46iwvqfpzxphsdvaq-examples.drv
  /nix/store/cd6a8z5dig5r8k0cvwaf202130pnx9xg-test-examples.drv