Found the answer:
Xournal for Chinook is untouched.

To install it, simply add the chinook repository:

Catalog name: maemo Extras (chinook)
Web address: http://repository.maemo.org/extras
Distribution: chinook
Components: free non-free

Catalog name: maemo Extras Devel (chinook)
Web address: http://repository.maemo.org/extras-devel
Distribution: chinook
Components: free non-free

Disable the maemo Extras Devel (diablo) repository, in case you have it enabled.
After the installation remove the "maemo Extras Devel (chinook)" repository.

It should now work.