Python version change when building from wheel

• Poetry version: 1.6.1

• Python version: 3.10

• OS version and name: Ubuntu 18.04

• pyproject.toml: https://gist.github.com/hvarfner/6f83fdce670fbc762deef068d1dccb9f

• I am on the latest stable Poetry version, installed using a recommended method.

• I have searched the issues of this repo and believe that this is not a duplicate.

• I have consulted the FAQ and blog for any relevant entries or release notes.

• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

I am trying to install a repo from source (https://github.com/pytorch/botorch) which requires python3.9+ from a conda environment which runs python3.10. My conda base environment runs python3.8.

(py310) hvarfner@hvarfner:~/Documents/MyBO$ python
Python 3.10.12 | packaged by conda-forge | (main, Jun 23 2023, 22:40:32) [GCC 12.3.0] on linux

Then, when trying to add the repo:
poetry add git+ssh://git@github.com:pytorch/botorch.git#main

[Full error MSG in separate file]
...
...
Command ['/tmp/tmp5c67djyh/.venv/bin/python', 'setup.py', 'egg_info'] errored with the following return code 1

Output:
Your version of python (3.8) is too old. You need python >= 3.9.

/tmp/tmp5c67djyh/.venv/ runs the conda base environment with the 3.8 installation. The same thing happens when trying to add the repo from inside poetry shell (not sure if this is a good idea or not). As such, adding the repository fails, as it doesn't try to install it with the py3.10 version.

Is this a bug, or is it (as I expect) an error on my end?

error_msg.txt

Reproduce the poetry add git+ssh://git@github.com:pytorch/botorch.git#main command using the linked pyproject.toml and the reported conda environments. Start with the attached error_msg.txt and the setup.py egg_info invocation, then determine why the temporary environment uses Python 3.8 instead of 3.10. Done should establish whether this is Poetry behavior or an environment configuration issue.