these 3 derivations will be built:
  /nix/store/gfax2gk09wa4s6yj9acvjh74qk5sxpix-herdr-core-0.1.21-vendor.drv
  /nix/store/w9q9my61p0hvahnj568q3slyxfahaxx6-herdr-core-0.1.21.drv
  /nix/store/ca4dak1m3xknvqyyxl0ygn2b6vgr3axc-check-herdr-core.drv