Installing ubuntu-advantage-tools fails with Python module import not found

[Owen]

Installing results in:
Preconfiguring packages ...
Selecting previously unselected package ubuntu-advantage-tools.
(Reading database ... 694873 files and directories currently installed.)
Preparing to unpack .../ubuntu-advantage-tools_37.1ubuntu0~24.04_all.deb ...
Unpacking ubuntu-advantage-tools (37.1ubuntu0~24.04) ...
Setting up ubuntu-advantage-tools (37.1ubuntu0~24.04) ...
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ModuleNotFoundError: No module named 'uaclient.files'
Traceback (most recent call last):
  File "/usr/lib/ubuntu-advantage/migrate_user_config.py", line 17, in <module>
    from uaclient import defaults, messages
ImportError: cannot import name 'defaults' from 'uaclient' (/usr/local/lib/python3.12/dist-packages/uaclient/__init__.py)
dpkg: error processing package ubuntu-advantage-tools (--configure):
 installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 ubuntu-advantage-tools
E: Sub-process /usr/bin/dpkg returned an error code (1)

> which python3
/usr/bin/python3

> python3 -c "import uaclient"

> sudo python3 -c "import uaclient"

> env PYTHONPATH=/usr/lib/python3/dist-packages python3 -c "import uaclient"

> sudo env PYTHONPATH=/usr/lib/python3/dist-packages python3 -c "import uaclient"

> ua version
Traceback (most recent call last):
  File "/usr/bin/ua", line 33, in <module>
    sys.exit(load_entry_point('ubuntu-pro-client==8001', 'console_scripts', 'ubuntu-advantage')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/bin/ua", line 25, in importlib_load_entry_point
    return next(matches).load()
           ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/importlib/metadata/__init__.py", line 205, in load
    module = import_module(match.group('module'))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1324, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'uaclient.cli'

> apt policy ubuntu-advantage-tools
ubuntu-advantage-tools:
  Installed: 37.1ubuntu0~24.04
  Candidate: 37.1ubuntu0~24.04
  Version table:
 *** 37.1ubuntu0~24.04 500
        500 http://gb.archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu noble-updates/universe i386 Packages
        100 /var/lib/dpkg/status
     31.2.3 500
        500 http://archive.ubuntu.com/ubuntu noble/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu noble/universe i386 Packages
        500 http://gb.archive.ubuntu.com/ubuntu noble/universe amd64 Packages
        500 http://gb.archive.ubuntu.com/ubuntu noble/universe i386 Packages

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: ubuntu-advantage-tools 37.1ubuntu0~24.04
ProcVersionSignature: Ubuntu 6.11.0-28.28~24.04.1-generic 6.11.11
Uname: Linux 6.11.0-28-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.30.0-0ubuntu4.4
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: KDE
Date: Wed Jan 7 12:18:24 2026
InstallationDate: Installed on 2024-12-13 (390 days ago)
InstallationMedia: Ubuntu 22.04.5 LTS "Jammy Jellyfish" - Release amd64 (20240911)
PackageArchitecture: all
SourcePackage: ubuntu-advantage-tools
UpgradeStatus: Upgraded to noble on 2024-12-16 (387 days ago)

[Owen (osavill-z)]

There is no Python3-uaclient

> sudo apt install --reinstall python3-opcua
...
Reinstallation of python3-opcua is not possible, it cannot be downloaded.
...

> pip install opcua opcua-client
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.
...

[Owen (osavill-z)]

> sudo pro attach
Traceback (most recent call last):
  File "/usr/bin/pro", line 33, in <module>
    sys.exit(load_entry_point('ubuntu-pro-client==8001', 'console_scripts', 'ubuntu-advantage')())
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/bin/pro", line 25, in importlib_load_entry_point
    return next(matches).load()
           ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/importlib/metadata/__init__.py", line 205, in load
    module = import_module(match.group('module'))
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/importlib/__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1324, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'uaclient.cli'

[Owen (osavill-z)]

dpkg -l | grep opcua
ii python-opcua-tools 0.98.11-1ubuntu1 all Pure Python OPC-UA Client and Server (tools)
ii python3-opcua 0.98.11-1ubuntu1 all Pure Python OPC-UA Client and Server (Python 3)