The current execution environment is a Linux container with a preinstalled toolchain. Obviously it should be treated as environment-specific, not a stable contract.
Host: Linux-4.4.0-x86_64-with-glibc2.41
Usable preinstalled toolchains in this environment:
python: Python 3.13.5
pip: pip 25.1.1 from /opt/pyvenv/lib/python3.13/site-packages/pip (python 3.13)