these 2 derivations will be built:
  /nix/store/k5q2pzdr4m20caqvjwn3hp09mvsqkhmq-multica-desktop-0.8.1.drv
  /nix/store/9k2glxs6115gr1wjpbfs5m1qxh7cavsz-check-multica-desktop.drv