The differences between the original tarball and the dfsg versions are:

1. rm src/daemon/input_mac_mouse_legacy.c

  This removes a file licensed under the Apple Public Source License (APSL)
  which is DFSG-incompatible.

2. rm macos/org.pqrs.driver.Karabiner.VirtualHIDDevice.v060800.kext/Contents/MacOS/VirtualHIDDevice

  This is a binary file with no sources

3. rm -r src/libs/quazip

  This is a copy of a 3rd party library which is already in Debian. It has been
  added as a Build-Depends: and we aren't compiling it so it doesn't need to be
  redistributed.
