Error while checking for conflicts

Description

I tried to install FasAPI via Spyder. It seems to have worked, but pip showed an error and asked me to post it here as an issue, so here you go.

Expected behavior

No response

pip version

22.2

Python version

3.10.5 (main, Jun 6 2022, 18:49:26) [GCC 12.1.0]

OS

Operating System: Manjaro Linux KDE Plasma Version: 5.24.6 KDE Frameworks Version: 5.96.0 Qt Version: 5.15.5 Kernel Version: 5.15.57-2-MANJARO (64-bit) Graphics Platform: X11 Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 15.6 GiB of RAM Graphics Processor: AMD Radeon RX 550 / 550 Series

How to Reproduce

1. Open Spyder IDE 5.3.2

2. Open an IPython console (IPython 8.4.0)

3. run !pip install fastapi

Output

Defaulting to user installation because normal site-packages is not writeable
Collecting fastapi
  Downloading fastapi-0.79.0-py3-none-any.whl (54 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 54.6/54.6 kB 2.0 MB/s eta 0:00:00
[?25hCollecting starlette==0.19.1
  Downloading starlette-0.19.1-py3-none-any.whl (63 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 63.3/63.3 kB 13.9 MB/s eta 0:00:00
ollecting pydantic!=1.7,!=1.7.1,!=1.7.2,!=1.7.3,!=1.8,!=1.8.1,<2.0.0,>=1.6.2
  Downloading pydantic-1.9.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (12.0 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 12.0/12.0 MB 33.4 MB/s eta 0:00:00
irement already satisfied: anyio<5,>=3.4.0 in /usr/lib/python3.10/site-packages (from starlette==0.19.1->fastapi) (3.6.1)
Requirement already satisfied: typing-extensions>=3.7.4.3 in /usr/lib/python3.10/site-packages (from pydantic!=1.7,!=1.7.1,!=1.7.2,!=1.7.3,!=1.8,!=1.8.1,<2.0.0,>=1.6.2->fastapi) (4.2.0)
Requirement already satisfied: idna>=2.8 in /usr/lib/python3.10/site-packages (from anyio<5,>=3.4.0->starlette==0.19.1->fastapi) (3.3)
Requirement already satisfied: sniffio>=1.1 in /usr/lib/python3.10/site-packages (from anyio<5,>=3.4.0->starlette==0.19.1->fastapi) (1.2.0)
ERROR: Error while checking for conflicts. Please file an issue on pip's issue tracker: https://github.com/pypa/pip/issues/new
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/pip/_internal/commands/install.py", line 585, in _determine_conflicts
    return check_install_conflicts(to_install)
  File "/usr/lib/python3.10/site-packages/pip/_internal/operations/check.py", line 110, in check_install_conflicts
    check_package_set(
  File "/usr/lib/python3.10/site-packages/pip/_internal/operations/check.py", line 85, in check_package_set
    if not req.specifier.contains(version, prereleases=True):
  File "/home/carles/.local/lib/python3.10/site-packages/pkg_resources/_vendor/packaging/specifiers.py", line 728, in contains
    item = parse(item)
  File "/home/carles/.local/lib/python3.10/site-packages/pkg_resources/_vendor/packaging/version.py", line 49, in parse
    return Version(version)
  File "/home/carles/.local/lib/python3.10/site-packages/pkg_resources/_vendor/packaging/version.py", line 264, in __init__
    match = self._regex.search(version)
TypeError: expected string or bytes-like object
Installing collected packages: pydantic, starlette, fastapi
Successfully installed fastapi-0.79.0 pydantic-1.9.1 starlette-0.19.1

Code of Conduct

• I agree to follow the PSF Code of Conduct.

[ghost]

@pfmoore Pip version is identical in docker and local, and I have NEVEN installed/updated any pip packages to root site package using pip. Unless python-pip is causing some problem, which is provided by OS maintainer.

[uranusjr]

Closing this for now; please raise the issue to the OS pip provider first. We can always reopen if they identify the issue in pip.