I used to have

[test]
use_coverage = true

in my pants.toml but after update to Pants 2.2.0.dev1 my integration tests (using runtime_package_dependencies) started failing with

pytest-cov: Failed to setup subprocess coverage. Environ: {'COV_CORE_SOURCE': '.', 'COV_CORE_CONFIG': '/tmp/process-executionN7mCSU/.coveragerc', 'COV_CORE_DATAFILE': '/tmp/process-executionN7mCSU/.coverage'} Exception: CoverageException("Unrecognized option '[run] relative_files=' in config file /tmp/process-executionN7mCSU/.coveragerc")
pytest-cov: Failed to setup subprocess coverage. Environ: {'COV_CORE_SOURCE': '.', 'COV_CORE_CONFIG': '/tmp/process-executionN7mCSU/.coveragerc', 'COV_CORE_DATAFILE': '/tmp/process-executionN7mCSU/.coverage'} Exception: CoverageException("Unrecognized option '[run] relative_files=' in config file /tmp/process-executionN7mCSU/.coveragerc")
Traceback (most recent call last):
  File "/tmp/process-executionN7mCSU/src.python.arcor2_mocks.scripts/mock_scene.pex/.bootstrap/pex/pex.py", line 444, in execute
  File "/tmp/process-executionN7mCSU/src.python.arcor2_mocks.scripts/mock_scene.pex/.bootstrap/pex/pex.py", line 103, in _activate
  File "/tmp/process-executionN7mCSU/src.python.arcor2_mocks.scripts/mock_scene.pex/.bootstrap/pex/environment.py", line 260, in activate
  File "/tmp/process-executionN7mCSU/src.python.arcor2_mocks.scripts/mock_scene.pex/.bootstrap/pex/environment.py", line 425, in _activate
  File "/tmp/process-executionN7mCSU/src.python.arcor2_mocks.scripts/mock_scene.pex/.bootstrap/pex/environment.py", line 160, in _update_module_paths
  File "/usr/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
ModuleNotFoundError: No module named '__mp_main__'

When I remove

use_coverage

from pants.toml, it works ok again. Any idea?

Huh, it complains about

relative_files=

being an unrecognized option in coveragerc. Thus, I suspect coverage is failing to be set up. That's fishy. I'm OOO so am not able to look much more closely, but my hunch is that's the issue. Might be helpful to double check if you've override the coverage version, and GitHub to see if any changes to backend/python/goals include coverage changes

To follow up on Eric’s message, does your pants.toml set the `--coverage-py-version`option?

@fast-nail-55400 I'm not setting this option. The pants.toml can be found here: https://github.com/robofit/arcor2/blob/master/pants.toml

The default requirement sets it to

coverage>=5.0.3,<5.1

, I’d more interested to not what version of coverage was resolved.

If [coverage].version is not set, then that’s probably a red herring. Pants uses Coverage 5, so that option should work It also looks like they’re not using a custom .coverage.rc, so this shouldn’t be an issue with how the config file is set up. Instead, Pants should be generating a coveragerc file with that one option Tom (or others), if you have a chance, may help to clone Zdeněk’s repo and use

./pants_from_sources

to check some things like that the contents of the coverage file are what we expect

I’ve cloned the repo locally and am attempting to reproduce the issue.

Unfortunately, it is necessary to install some system dependencies (there is build-support/install_kinect_prerequisites.sh script for that) or you can remove

arcor2_kinect_azure

package which requires this.