these 3 derivations will be built:
  /nix/store/hv8kprwrb0z6wgl21nyn47g4zwv2qim7-but-0.22.3-vendor-staging.drv
  /nix/store/bsyyc34zjqls048m7zr1r2jmc7d5kcpy-but-0.22.3-vendor.drv
  /nix/store/209ziv4a7sz994va9ndgk9ygdr3lqv9f-but-0.22.3.drv