these 5 derivations will be built:
  /nix/store/va03as0ynhwxzbcd0c4g1cni6sh03379-source.drv
  /nix/store/kay8rzxyly2a8nkbvyshzw7k8l99g9fn-ctx-2.1.4-vendor-staging.drv
  /nix/store/ph8yb9qp29x6r6mqrw6h8r6zlgjn8z3x-ctx-2.1.4-vendor.drv
  /nix/store/37nb9q23a1saassi5g0cjic8h0kzn2rw-ctx-2.1.4.drv
  /nix/store/ahydg325r00znjaz445da1rfi2nga2ip-check-ctx.drv