these 5 derivations will be built:
  /nix/store/7h2fqfs9r38wx2x5arbfmlx3n6afdigl-source.drv
  /nix/store/bljid44l3hmbajd9df6g3gjriynwjr6a-ctx-2.2.7-vendor-staging.drv
  /nix/store/r97caqzf0qlr5synhdwr4cm6jsxhkqlj-ctx-2.2.7-vendor.drv
  /nix/store/ikqw3gvb86mfgcc7djzd69v8sfw70ims-ctx-2.2.7.drv
  /nix/store/28r20mfr3jys8f4bscnia7k68337bm05-check-ctx.drv