#21697 ModuleNotFoundError: No module named 'distutils.util' Issue created by mdaffad Describe the bug I tried to run

pants generate-lockfiles

, and the following error message appeared:

pip:   File "/home/***/.cache/pants/named_caches/pex_root/venvs/***/lib/python3.10/site-packages/pip/_vendor/packaging/tags.py", line 7, in <module>
pip:     import distutils.util
pip: ModuleNotFoundError: No module named 'distutils.util'

After debugging, I found that it uses Python 3.10 from the /usr/bin path because I installed a Python interpreter that fulfills the interpreter constraints. I tried to resolve this by updating the search path to

search_path = ["<PYENV>", "<PYENV_LOCAL>"]

and setting

interpreter_constraints = ['>=3.10-dev,<3.12-dev']

. My goal is to use the Python interpreter installed via pyenv, which includes the distutils package. I installed the interpreter with the

3.10-dev

version. My question: 1. Is the interpreter selection determined by the lowest fulfilled version available in the search_path? For example:

intepreter_constraints = ['>=3.10,<3.12']

search_path = ["<PYENV_LOCAL>", "/usr/bin"]

2. How can I properly define interpreter_constraints for a

<major>.<minor>-dev

version? When I use

interpreter_constraints = ['>=3.10-dev,<3.12-dev']

, it works without error, but there is no documentation explaining how to specify constraints for

<major>.<minor>-dev

. Note: 1. I verified the constraint by adding version 3.10 via pyenv (without the -dev suffix), but it still properly selects the interpreter with -dev. 2. I checked if the distutils import works by running import distutils.util on the interpreter that was exported using pants export. Pants version 2.23.0 OS Ubuntu 20.04 Additional info May relevant information on python and python-bootstrap configuration Old pants.toml

...
[python]
interpreter_constraints = ['>=3.10,<3.12']
...
[python-bootstrap]
search_path = ["<PYENV_LOCAL>", "/usr/bin"]

New pants.toml

...
[python]
interpreter_constraints = ['>=3.10-dev,<3.12-dev']
enable_resolves = true

[python-bootstrap]
search_path = ["<PYENV>", "<PYENV_LOCAL>"]

pantsbuild/pants