$ ./result/bin/output
Traceback (most recent call last):
  File "/nix/store/j24f31sv6ak03xz8czab8kvm33jydbyq-script/bin/.output-wrapped", line 3, in <module>
    import cv2
ImportError: libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory