these 2 derivations will be built:
  /nix/store/ppad81zwqinyrwm088m0ylzjqwklchsn-rtk-1.2.0.drv
  /nix/store/9czr78ly4s5hwyskl4yw9swgccma0qxs-check-rtk.drv
this path will be fetched (37.5 MiB download, 332.4 MiB unpacked):
  /nix/store/55zmb1mn53jl0mddaa2m7qv9wncqcwnw-rtk-1.2.0-vendor