pytest INTERNALERROR in RPM buildroot: canonicalize_name(None) in tests/conftest.py when a dist lacks Name metadata #921

Checklist

• I agree to the terms within the Safety Code of Conduct.
• I have searched existing issues to ensure this bug hasn't been reported before.

Safety version

3.6.2 (also present on main as of today — verified against tests/conftest.py on main)

Python version

3.11

Operating System

Linux (openEuler RPM buildroot / chroot, but any environment with a broken .dist-info is affected)

Bug description

When running the test suite with pytest, pytest_configure in tests/conftest.py iterates over all installed distributions in the environment:

def pytest_configure(config):
    main_deps_specs = get_project_dependencies()
    all_dists = {
        canonicalize_name(dist.metadata["Name"]): (dist.metadata["Name"], dist.version)
        for dist in distributions()
    }

This assumes every installed distribution has a Name field in its metadata. In an RPM buildroot (and other non-venv environments), some .dist-info directories lack the Name entry, so dist.metadata["Name"] returns None and packaging.utils.canonicalize_name(None) raises AttributeError — pytest aborts with INTERNALERROR before any test runs, so the whole %check stage of the package build fails.

This is only printed as a dependency table (informational output), but it hard-crashes the test session in environments where the system site-packages contain a partially-installed or malformed distribution.

Steps to reproduce

In an environment where at least one installed distribution has a .dist-info without a Name: field in METADATA (easy to hit inside a chroot/buildroot), run:

pytest tests/

Command and output

INTERNALERROR>   File "/home/lkp/rpmbuild/BUILD/safety-3.6.2/tests/conftest.py", line 52, in pytest_configure
INTERNALERROR>     all_dists = {
INTERNALERROR>   File "/home/lkp/rpmbuild/BUILD/safety-3.6.2/tests/conftest.py", line 53, in <dictcomp>
INTERNALERROR>     canonicalize_name(dist.metadata["Name"]): (dist.metadata["Name"], dist.version)
INTERNALERROR>   File "/usr/lib/python3.11/site-packages/packaging/utils.py", line 120, in canonicalize_name
INTERNALERROR>     value = name.lower().replace("_", "-").replace(".", "-")
INTERNALERROR>             ^^^^^^^^^^
INTERNALERROR> AttributeError: 'NoneType' object has no attribute 'lower'
error: Bad exit status from /var/tmp/rpm-tmp.8Zhikk (%check)

Additional context

Suggested fix

Skip distributions without a Name:

all_dists = {
    canonicalize_name(name): (name, dist.version)
    for dist in distributions()
    if (name := dist.metadata["Name"]) is not None
}