pytest cannot find module easynmt when I run pytest

my-proj
├── src
│   ├── run.py
│   ├── __init__.py (empty)
└── tests
│   ├── test_run.py
│   ├── test_requirements.txt
|___setup.py
|___conftest.py (empty)
|___pytest.ini 

setup.py:

install_requires=['easynmt==2.0.2', 'torch==2.2.2']

run.py:

from easynmt import EasyNMT, models

pytest.ini:

[pytest]
pythonpath = .

test_requirements.txt:

pytest
torch==2.2.2
easynmt==2.0.2

Error:

13:06:26  /usr/lib/python3.11/importlib/__init__.py:126: in import_module
13:06:26      return _bootstrap._gcd_import(name[level:], package, level)
13:06:26  tests/test_run.py:4: in <module>
13:06:26      from an_ml_easynmt_model import oversatt
13:06:26  src/__init__.py:1: in <module>
13:06:26      from an_ml_easynmt_model.run import oversatt
13:06:26  src/run.py:1: in <module>
13:06:26      from easynmt import EasyNMT, models
13:06:26  E   ModuleNotFoundError: No module named 'easynmt'

Actually pytest work locally but not in jenkins. Tests is run in jenkins with following bash-script:

      python -m venv ./testvenv
      source ./testvenv/bin/activate
      pip install -U pip
      pip install -U setuptools
      pip install -U wheel
      pip install -r ./tests/test_requirements.txt
      pip install -e .
      deactivate && source ./testvenv/bin/activate
      hash -r
      python -m site
      pytest tests 
      deactivate

(I found the deactivate/source “dance” here How do I use pytest with virtualenv?)

Tried putting empty init-files, init-files with src-manipulations, no conftest.py-file, tried running python -m pytest, and more. I’m lost.