these 4 derivations will be built:
  /nix/store/428vwl7ci98b3fcrdq0vjal70akm9fhw-source.drv
  /nix/store/dix6f6m0ypz77m2vjnx7vxyf3lk12nck-ctx-1.4.7-vendor-staging.drv
  /nix/store/lyhgl3vzkfx0qpzmbhn2cfaqd9vlzwnj-ctx-1.4.7-vendor.drv
  /nix/store/wxwv6da3wznid0i83nsww6g8xxc4320d-ctx-1.4.7.drv