these 2 derivations will be built:
  /nix/store/67xcy8axvgf7i4i548q67pjpkiv3fy6i-herdr-0.8.0-vendor.drv
  /nix/store/363xg6gi80b4caxhzvcn18qn6m87664c-herdr-0.8.0.drv