this derivation will be built:
  /nix/store/4cmx5jq5rj2nn05zqfinwxbm862w4dmh-pk2cmd-1.20.drv
these 2 paths will be fetched (13.0 KiB download, 44.1 KiB unpacked):
  /nix/store/y9ciqnzz82092lbcnprkdbpxn6gwslmi-libusb-compat-0.1.7
  /nix/store/cyspgdil6x95dajv47g4v3qhmyn7sqvg-libusb-compat-0.1.7-dev