these 5 derivations will be built:
  /nix/store/n1bz0cxpipsglllvdgiv9x885carffaz-source.drv
  /nix/store/j3549pabfkfv6ci43sjmjkhf207rchcc-ctx-2.0.3-vendor-staging.drv
  /nix/store/lw5bpribwyy5w5b0zdilbi0jdg6gdqgk-ctx-2.0.3-vendor.drv
  /nix/store/bxpp8b2mairz8hdbpbx3rmc6i82lnyhb-ctx-2.0.3.drv
  /nix/store/39zy0axmks1nqz9lrsrm7qby9xqgb6id-check-ctx.drv