failed to import bzrlib.strace No module named testtools

Standard Debian / testing

$ uname -a
Linux host 2.6.32-trunk-amd64 #1 SMP Sun Jan 10 22:40:40 UTC 2010 x86_64 GNU/Linux

$ type -a python
python is /usr/bin/python

$ bzr --version
Bazaar (bzr) 2.1.0
  Python interpreter: /usr/bin/python 2.5.5
  Python standard library: /usr/lib/python2.5
  Platform: Linux-2.6.32-trunk-amd64-x86_64-with-debian-squeeze-sid
  bzrlib: /usr/lib/python2.5/site-packages/bzrlib
  Bazaar configuration: /home/jaalto/.bazaar
  Bazaar log file: /home/jaalto/.bzr.log

$ bzr start-service -v
failed to import bzrlib.strace: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.doc.api: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.util.simplemapi: <type 'exceptions.NameError'> name 'windll' is not defined
failed to import bzrlib.benchmarks.bench_bench: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_xml: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_add: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_inventory: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_tags: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_dirstate: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_log: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_status: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_startup: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_cache_utf8: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_workingtree: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_bundle: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_transform: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_commit: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_osutils: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_info: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_rocks: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_pack: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_checkout: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_knit: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.bench_sftp: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.tree_creator: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.tree_creator.simple_many_commit: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.tree_creator.many_commit: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.tree_creator.heavily_merged: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.benchmarks.tree_creator.kernel_like: <type 'exceptions.ImportError'> No module named testtools
failed to import bzrlib.transport.ftp._gssapi: <class 'bzrlib.errors.DependencyNotPresent'> Unable to import library "kerberos": No module named \
kerberos
failed to import bzrlib.transport.http._pycurl: <class 'bzrlib.errors.DependencyNotPresent'> Unable to import library "pycurl": No module named p\
ycurl