Exception error during installation

[aquaaddict]

Hi, I followed the setup instructions, but partway thru running the setup I get the following errors

Configuring python3-pip.
dbus-mqtt-devices: Pip install module dependencies
Collecting PyYAML~=6.0
Downloading PyYAML-6.0.1.tar.gz (125 kB)
|████████████████████████████████| 125 kB 2.7 MB/s
Installing build dependencies ... done
Getting requirements to build wheel ... done
ERROR: Exception:
Traceback (most recent call last):
File "/usr/lib/python3.8/site-packages/pip/_internal/cli/base_command.py", lin e 186, in _main
status = self.run(options, args)
File "/usr/lib/python3.8/site-packages/pip/_internal/commands/install.py", lin e 331, in run
resolver.resolve(requirement_set)
File "/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 177, in resolve
discovered_reqs.extend(self._resolve_one(requirement_set, req))
File "/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 333, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 282, in _get_abstract_dist_for
abstract_dist = self.preparer.prepare_linked_requirement(req)
File "/usr/lib/python3.8/site-packages/pip/_internal/operations/prepare.py", l ine 515, in prepare_linked_requirement
abstract_dist = _get_prepared_distribution(
File "/usr/lib/python3.8/site-packages/pip/_internal/operations/prepare.py", l ine 95, in _get_prepared_distribution
abstract_dist.prepare_distribution_metadata(finder, build_isolation)
File "/usr/lib/python3.8/site-packages/pip/_internal/distributions/sdist.py", line 38, in prepare_distribution_metadata
self._setup_isolation(finder)
File "/usr/lib/python3.8/site-packages/pip/_internal/distributions/sdist.py", line 96, in _setup_isolation
reqs = backend.get_requires_for_build_wheel()
File "/usr/lib/python3.8/site-packages/pip/_vendor/pep517/wrappers.py", line 1 51, in get_requires_for_build_wheel
return self._call_hook('get_requires_for_build_wheel', {
File "/usr/lib/python3.8/site-packages/pip/_vendor/pep517/wrappers.py", line 2 55, in _call_hook
raise BackendUnavailable(data.get('traceback', ''))
pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last ):
File "/usr/lib/python3.8/site-packages/pip/_vendor/pep517/_in_process.py", lin e 63, in _build_backend
obj = import_module(mod_path)
File "/usr/lib/python3.8/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1014, in _gcd_import
File "", line 991, in _find_and_load
File "", line 961, in _find_and_load_unlocked
File "", line 219, in _call_with_frames_removed
File "", line 1014, in _gcd_import
File "", line 991, in _find_and_load
File "", line 975, in _find_and_load_unlocked
File "", line 671, in _load_unlocked
File "", line 843, in exec_module
File "", line 219, in _call_with_frames_removed
File "/var/volatile/tmp/pip-build-env-dkt_7i7e/overlay/lib/python3.8/site-pack ages/setuptools/init.py", line 16, in
from .dist import Distribution
File "/var/volatile/tmp/pip-build-env-dkt_7i7e/overlay/lib/python3.8/site-pack ages/setuptools/dist.py", line 27, in
from .extern.packaging.markers import InvalidMarker, Marker
File "/var/volatile/tmp/pip-build-env-dkt_7i7e/overlay/lib/python3.8/site-pack ages/setuptools/_vendor/packaging/markers.py", line 11, in
from ._parser import (
File "/var/volatile/tmp/pip-build-env-dkt_7i7e/overlay/lib/python3.8/site-pack ages/setuptools/_vendor/packaging/_parser.py", line 10, in
from ._tokenizer import DEFAULT_RULES, Tokenizer
File "/var/volatile/tmp/pip-build-env-dkt_7i7e/overlay/lib/python3.8/site-pack ages/setuptools/_vendor/packaging/_tokenizer.py", line 3, in
from dataclasses import dataclass
ModuleNotFoundError: No module named 'dataclasses'

dbus-mqtt-devices: Set up Victron module libraries
dbus-mqtt-devices: Set up device service to autorun on restart
dbus-mqtt-devices: Adding device service to /data/rc.local
dbus-mqtt-devices: Setup complete
root@raspberrypi2:/data/drivers# ./dbus-mqtt-devices-0.6.3/bin/setup.sh
dbus-mqtt-devices: Setup in /data/drivers/dbus-mqtt-devices-0.6.3 started
dbus-mqtt-devices: Checking to see if Python's Pip is installed
pip 20.0.2 from /usr/lib/python3.8/site-packages/pip (python 3.8)
dbus-mqtt-devices: Pip install module dependencies
Collecting PyYAML~=6.0
Using cached PyYAML-6.0.1.tar.gz (125 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
ERROR: Exception:
Traceback (most recent call last):
File "/usr/lib/python3.8/site-packages/pip/_internal/cli/base_command.py", lin e 186, in _main
status = self.run(options, args)
File "/usr/lib/python3.8/site-packages/pip/_internal/commands/install.py", lin e 331, in run
resolver.resolve(requirement_set)
File "/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 177, in resolve
discovered_reqs.extend(self._resolve_one(requirement_set, req))
File "/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 333, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "/usr/lib/python3.8/site-packages/pip/_internal/legacy_resolve.py", line 282, in _get_abstract_dist_for
abstract_dist = self.preparer.prepare_linked_requirement(req)
File "/usr/lib/python3.8/site-packages/pip/_internal/operations/prepare.py", l ine 515, in prepare_linked_requirement
abstract_dist = _get_prepared_distribution(
File "/usr/lib/python3.8/site-packages/pip/_internal/operations/prepare.py", l ine 95, in _get_prepared_distribution
abstract_dist.prepare_distribution_metadata(finder, build_isolation)
File "/usr/lib/python3.8/site-packages/pip/_internal/distributions/sdist.py", line 38, in prepare_distribution_metadata
self._setup_isolation(finder)
File "/usr/lib/python3.8/site-packages/pip/_internal/distributions/sdist.py", line 96, in _setup_isolation
reqs = backend.get_requires_for_build_wheel()
File "/usr/lib/python3.8/site-packages/pip/_vendor/pep517/wrappers.py", line 1 51, in get_requires_for_build_wheel
return self._call_hook('get_requires_for_build_wheel', {
File "/usr/lib/python3.8/site-packages/pip/_vendor/pep517/wrappers.py", line 2 55, in _call_hook
raise BackendUnavailable(data.get('traceback', ''))
pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last ):
File "/usr/lib/python3.8/site-packages/pip/_vendor/pep517/_in_process.py", lin e 63, in _build_backend
obj = import_module(mod_path)
File "/usr/lib/python3.8/importlib/init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1014, in _gcd_import
File "", line 991, in _find_and_load
File "", line 961, in _find_and_load_unlocked
File "", line 219, in _call_with_frames_removed
File "", line 1014, in _gcd_import
File "", line 991, in _find_and_load
File "", line 975, in _find_and_load_unlocked
File "", line 671, in _load_unlocked
File "", line 843, in exec_module
File "", line 219, in _call_with_frames_removed
File "/var/volatile/tmp/pip-build-env-tdp46dm6/overlay/lib/python3.8/site-pack ages/setuptools/init.py", line 16, in
from .dist import Distribution
File "/var/volatile/tmp/pip-build-env-tdp46dm6/overlay/lib/python3.8/site-pack ages/setuptools/dist.py", line 27, in
from .extern.packaging.markers import InvalidMarker, Marker
File "/var/volatile/tmp/pip-build-env-tdp46dm6/overlay/lib/python3.8/site-pack ages/setuptools/_vendor/packaging/markers.py", line 11, in
from ._parser import (
File "/var/volatile/tmp/pip-build-env-tdp46dm6/overlay/lib/python3.8/site-pack ages/setuptools/_vendor/packaging/_parser.py", line 10, in
from ._tokenizer import DEFAULT_RULES, Tokenizer
File "/var/volatile/tmp/pip-build-env-tdp46dm6/overlay/lib/python3.8/site-pack ages/setuptools/_vendor/packaging/_tokenizer.py", line 3, in
from dataclasses import dataclass
ModuleNotFoundError: No module named 'dataclasses'

dbus-mqtt-devices: Set up Victron module libraries
dbus-mqtt-devices: Set up device service to autorun on restart
dbus-mqtt-devices: Adding device service to /data/rc.local
dbus-mqtt-devices: Setup complete

Any ideas on how to resolve them would be much appreciated! :-)

Thanks

[freakent]

Try running the following before running the setup.sh script.
opkg install python3-modules

[freakent]

The setup script is now automatically installing the required module if it does already exist. So you shouldn't get this problem anymore.