Hi, I'm the main author of import_tracker. Thanks for taking the time to dig into it! It's a really interesting point that the subproces.Popen could itself be a security concern. The command that's being executed is executing the __main__ of the import_tracker library itself (which is not something that a user can't configure), so is your concern that import_tracker itself is untrusted and might be a concern for users running this on their machines?

For context on why I'm using the suprocess here, this allows the tracking to correctly allocate dependencies that are imported more than once (think my_lib.submod1 and my_lib.submod2 both need tensorflow, but my_lib.submod3 doesn't).