these 4 derivations will be built:
  /nix/store/gh1v936dfzv766sj0jkjb4ccnq17q421-source.drv
  /nix/store/jv1vnjxykd0c1781sd2806cx8i0wzv2z-ctx-1.2.4-vendor-staging.drv
  /nix/store/1ncxml2mcrvgqhyzgiwvxpbx8w0pdq41-ctx-1.2.4-vendor.drv
  /nix/store/wr1hb9q9x6vlypvj049y9qnzq4fpvvls-ctx-1.2.4.drv