Note

Possibly a regression or variant:
I'm seeingSimilar AttributeError as before onMacOS but with:type_param.__default__

...File "/User/username/.local/lib/rustpython3.13/site-packages/pip/_internal/utils/misc.py", line 44, in <module>    from pip._internal.utils.retry import retry  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/utils/retry.py", line 8, in <module>    P = ParamSpec("P")  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_vendor/typing_extensions.py", line 1768, in __new__    _set_default(paramspec, default)  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_vendor/typing_extensions.py", line 1613, in _set_default    type_param.__default__ = defaultAttributeError: attribute '__default__' of 'ParamSpec' objects is not writable

cargo uninstall rustpython||:rm -vf~/.local/bin/pip3.13||:rm -vf~/.local/bin/pip||:rm -vf~/.local/bin/pip3||:rm -vfRd~/.local/lib/rustpython3.13||:

cargo install --git https://github.com/RustPython/RustPython rustpython --features ssl --feature jit

rustpython --install-pip

$rustpython --install-pipDefaulting to user installation because normal site-packages is not writeable...Installing collected packages: pipSuccessfully installed pip-23.2.1

$rustpython -m pip listPackage Version------- -------pip     23.2.1[notice] A new release of pip is available: 23.2.1 -> 25.1.1[notice] To update, run: rustpython -m pip install --upgrade pip

rustpython -m pip install --upgrade pip

$rustpython -m pip install --upgrade pipDefaulting to user installation because normal site-packages is not writeableRequirement already satisfied: pip in /Users/username/.local/lib/rustpython3.13/site-packages (23.2.1)Collecting pip  Obtaining dependency information for pip from https://files.pythonhosted.org/packages/29/a2/d40fb2460e883eca5199c62cfc2463fd261f760556ae6290f88488c362c0/pip-25.1.1-py3-none-any.whl.metadata  Using cached pip-25.1.1-py3-none-any.whl.metadata (3.6 kB)Using cached pip-25.1.1-py3-none-any.whl (1.8 MB)Installing collected packages: pip  Attempting uninstall: pip    Found existing installation: pip 23.2.1    Uninstalling pip-23.2.1:      Successfully uninstalled pip-23.2.1Successfully installed pip-25.1.1

rustpython -m pip list

$rustpython -m pip listTraceback (most recent call last):  File "/Users/amak/.cargo/git/checkouts/rustpython-63090cdce5e18442/c195473/pylib/Lib/runpy.py", line 197, in _run_module_as_main    "__main__", mod_spec)  File "/Users/amak/.cargo/git/checkouts/rustpython-63090cdce5e18442/c195473/pylib/Lib/runpy.py", line 86, in _run_code    exec(code, run_globals)  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/__main__.py", line 22, in <module>    from pip._internal.cli.main import main as _main  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/cli/main.py", line 10, in <module>    from pip._internal.cli.autocompletion import autocomplete  File "/Users/amak/.local/lib/rustpython3.13/site-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>    from pip._internal.cli.main_parser import create_main_parser  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/cli/main_parser.py", line 8, in <module>    from pip._internal.build_env import get_runnable_pip  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/build_env.py", line 16, in <module>    from pip._internal.cli.spinners import open_spinner  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/cli/spinners.py", line 9, in <module>    from pip._internal.utils.logging import get_indentation  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/utils/logging.py", line 29, in <module>    from pip._internal.utils.misc import ensure_dir  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/utils/misc.py", line 44, in <module>    from pip._internal.utils.retry import retry  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_internal/utils/retry.py", line 8, in <module>    P = ParamSpec("P")  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_vendor/typing_extensions.py", line 1768, in __new__    _set_default(paramspec, default)  File "/Users/username/.local/lib/rustpython3.13/site-packages/pip/_vendor/typing_extensions.py", line 1613, in _set_default    type_param.__default__ = defaultAttributeError: attribute '__default__' of 'ParamSpec' objects is not writable

$rustc --versionrustc 1.88.0 (6b00bc388 2025-06-23) (Homebrew)

$rustpython --versionPython 3.13.0alpha (heads/master:c195473a2, Jul  8 2025, 07:49:57)[RustPython 0.4.0 with rustc 1.88.0 (6b00bc388 2025-06-23) (Homebrew)]