/usr/share/pyshared/bzrlib/plugins/ is in python-bzrlib 2.5.0-2ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/bzrlib/plugins/__init__.py
/usr/share/pyshared/bzrlib/plugins/bash_completion/
/usr/share/pyshared/bzrlib/plugins/bash_completion/__init__.py
/usr/share/pyshared/bzrlib/plugins/bash_completion/bashcomp.py
/usr/share/pyshared/bzrlib/plugins/bash_completion/tests/
/usr/share/pyshared/bzrlib/plugins/bash_completion/tests/__init__.py
/usr/share/pyshared/bzrlib/plugins/bash_completion/tests/test_bashcomp.py
/usr/share/pyshared/bzrlib/plugins/changelog_merge/
/usr/share/pyshared/bzrlib/plugins/changelog_merge/__init__.py
/usr/share/pyshared/bzrlib/plugins/changelog_merge/changelog_merge.py
/usr/share/pyshared/bzrlib/plugins/changelog_merge/tests/
/usr/share/pyshared/bzrlib/plugins/changelog_merge/tests/__init__.py
/usr/share/pyshared/bzrlib/plugins/changelog_merge/tests/test_changelog_merge.py
/usr/share/pyshared/bzrlib/plugins/launchpad/
/usr/share/pyshared/bzrlib/plugins/launchpad/__init__.py
/usr/share/pyshared/bzrlib/plugins/launchpad/account.py
/usr/share/pyshared/bzrlib/plugins/launchpad/lp_api.py
/usr/share/pyshared/bzrlib/plugins/launchpad/lp_api_lite.py
/usr/share/pyshared/bzrlib/plugins/launchpad/lp_directory.py
/usr/share/pyshared/bzrlib/plugins/launchpad/lp_propose.py
/usr/share/pyshared/bzrlib/plugins/launchpad/lp_registration.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_account.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_lp_api.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_lp_api_lite.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_lp_directory.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_lp_login.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_lp_open.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_lp_service.py
/usr/share/pyshared/bzrlib/plugins/launchpad/test_register.py
/usr/share/pyshared/bzrlib/plugins/netrc_credential_store/
/usr/share/pyshared/bzrlib/plugins/netrc_credential_store/__init__.py
/usr/share/pyshared/bzrlib/plugins/netrc_credential_store/tests/
/usr/share/pyshared/bzrlib/plugins/netrc_credential_store/tests/__init__.py
/usr/share/pyshared/bzrlib/plugins/netrc_credential_store/tests/test_netrc.py
/usr/share/pyshared/bzrlib/plugins/news_merge/
/usr/share/pyshared/bzrlib/plugins/news_merge/__init__.py
/usr/share/pyshared/bzrlib/plugins/news_merge/news_merge.py
/usr/share/pyshared/bzrlib/plugins/news_merge/parser.py
/usr/share/pyshared/bzrlib/plugins/news_merge/tests/
/usr/share/pyshared/bzrlib/plugins/news_merge/tests/__init__.py
/usr/share/pyshared/bzrlib/plugins/news_merge/tests/test_news_merge.py
/usr/share/pyshared/bzrlib/plugins/po_merge/
/usr/share/pyshared/bzrlib/plugins/po_merge/__init__.py
/usr/share/pyshared/bzrlib/plugins/po_merge/po_merge.py
/usr/share/pyshared/bzrlib/plugins/po_merge/tests/
/usr/share/pyshared/bzrlib/plugins/po_merge/tests/__init__.py
/usr/share/pyshared/bzrlib/plugins/po_merge/tests/test_po_merge.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/
/usr/share/pyshared/bzrlib/plugins/weave_fmt/__init__.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/branch.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/bzrdir.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/repository.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/test_bzrdir.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/test_repository.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/test_workingtree.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/workingtree.py
/usr/share/pyshared/bzrlib/plugins/weave_fmt/xml4.py