these 3 derivations will be built:
  /nix/store/6dwdmlbd1mpbmj34y4gdmpgj4s2wfm7a-ck-0.8.1-vendor.drv
  /nix/store/pi2xi502vlkj68mxkrds6bpdzg13hxr4-ck-0.8.1.drv
  /nix/store/babw4zffl8ildvimhgr4zwjyp8z5355l-check-ck.drv