# Migrating from libtracker-control 1.x to 2.0

Tracker 2.0 is a new major version, containing some possibly incompatible changes. Most of the changes are not hard to adapt, and even unlikely to be a problem if the ported application was kept up-to-date in its usage of 1.x.

## Cancellation support for tracker_miner_manager_index_file

The tracker_miner_manager_index_file method now requires a GCancellable argument. You can pass NULL if you don't want to specify one.