these 2 derivations will be built:
  /nix/store/dafg7b3kp9jy66glkw35adpmyz0srfyg-rtk-0.50.0.drv
  /nix/store/41287r3br8f7ahkq0ylrwn623hry64dw-check-rtk.drv
this path will be fetched (38.8 MiB download, 295.5 MiB unpacked):
  /nix/store/2q1vrqw3hlyrl4rvfva64vql5bsnk8na-rtk-0.50.0-vendor