these 2 derivations will be built:
  /nix/store/2h9fc5lh0vsbff5yfy09ad77gsr3ngm9-horae-checks-deps-0.1.0.drv
  /nix/store/qn0cscq1r41g1nhcnywjjibzxs97k7b6-horae-tests-0.1.0.drv