Error while checking for conflicts.

[dantee-e]

$ pip install --upgrade pip

Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pip in /usr/lib/python3.13/site-packages (24.3.1)
Collecting pip
Downloading pip-26.0.1-py3-none-any.whl.metadata (4.7 kB)
Downloading pip-26.0.1-py3-none-any.whl (1.8 MB)
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 1.8/1.8 MB 11.4 MB/s eta 0:00:00
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/python3.13/site-packages/pip/_internal/commands/install.py", line 584, in _determine_conflicts
return check_install_conflicts(to_install)
File "/usr/lib/python3.13/site-packages/pip/_internal/operations/check.py", line 117, in check_install_conflicts
package_set, _ = create_package_set_from_installed()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.13/site-packages/pip/_internal/operations/check.py", line 59, in create_package_set_from_installed
package_set[name] = PackageDetails(dist.version, dependencies)
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/pip/_internal/metadata/importlib/_dists.py", line 168, in version
return parse_version(self._dist.version)
File "/usr/lib/python3.13/site-packages/pip/_vendor/packaging/version.py", line 56, in parse
return Version(version)
File "/usr/lib/python3.13/site-packages/pip/_vendor/packaging/version.py", line 200, in init
match = self._regex.search(version)
TypeError: expected string or bytes-like object, got 'NoneType'
Installing collected packages: pip
Successfully installed pip-26.0.1

It asked me to post here so I did. I updated it successfully (as shown in Successfully installed pip-26.0.1) and the error dissappeared:

pip install pandas
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pandas in /home/danteramacci/.local/lib/python3.13/site-packages (2.3.3)
Requirement already satisfied: numpy>=1.26.0 in /usr/lib64/python3.13/site-packages (from pandas) (2.2.6)
Requirement already satisfied: python-dateutil>=2.8.2 in /usr/lib/python3.13/site-packages (from pandas) (2.8.2)
Requirement already satisfied: pytz>=2020.1 in /home/danteramacci/.local/lib/python3.13/site-packages (from pandas) (2025.2)
Requirement already satisfied: tzdata>=2022.7 in /home/danteramacci/.local/lib/python3.13/site-packages (from pandas) (2025.2)
Requirement already satisfied: six>=1.5 in /usr/lib/python3.13/site-packages (from python-dateutil>=2.8.2->pandas) (1.17.0)
WARNING: Error parsing dependencies of proton-vpn-lib: Bad metadata in <importlib.metadata.PathDistribution object at 0x7f0a691567b0> (invalid metadata entry version)

[sepehr-rs]

Hi @dantee-e, thanks for reporting this.
From the traceback and the later warning:

WARNING: Error parsing dependencies of proton-vpn-lib:
Bad metadata ... (invalid metadata entry version)

It looks like proton-vpn-lib has invalid or corrupted metadata installed in your environment. In particular, pip is encountering a distribution where the version field is None, which is not valid.
You could try to:

• Run pip show proton-vpn-lib and note the installation Location.
• Try uninstalling it with pip uninstall proton-vpn-lib. (This may leave behind some files.)
• If the issue persists, go to the installation location you noted earlier and look for folders named either proton_vpn_lib or proton_vpn_lib-<some-version>.dist-info.
• If such folders exist after uninstalling, remove them manually and then try installing the package again.