Specifiers with .* and epoch changed behaviours #673
Description
Hello, it seems that SpecifierSet.contains works differently between versions 21 and 23, when the == operator is used with a version that contains both an epoch and .*:
> docker run --rm -it python:3.11 /bin/bash
python3 -m venv /tmp/venv21
/tmp/venv21/bin/python3 -m pip install 'packaging==21.3'
cat <<EOF | /tmp/venv21/bin/python3 -
from packaging.requirements import Requirement
req = Requirement('metomi-isodatetime==1!3.0.*')
print(f"{req.specifier.contains('1!3.0.0', prereleases=True)=}")
EOF
# => req.specifier.contains('1!3.0.0', prereleases=True)=True
# ---
python3 -m venv /tmp/venv23
/tmp/venv23/bin/python3 -m pip install 'packaging==23.0'
cat <<EOF | /tmp/venv23/bin/python3 -
from packaging.requirements import Requirement
req = Requirement('metomi-isodatetime==1!3.0.*')
print(f"{req.specifier.contains('1!3.0.0', prereleases=True)=}")
EOF
# => req.specifier.contains('1!3.0.0', prereleases=True)=FalseIs this change intended?
I went quickly trough PEP 440 and PEP 508 and I have the impression that this kind of requirement/comparison is allowed, but I might be wrong or missing something.
Note that when we remove the version epoch, the return value of contains is the same for both 21.3 and 23:
cat <<EOF | /tmp/venv21/bin/python3 -
from packaging.requirements import Requirement
req = Requirement('metomi-isodatetime==3.0.*')
print(f"{req.specifier.contains('3.0.0', prereleases=True)=}")
EOF
# => req.specifier.contains('3.0.0', prereleases=True)=True
cat <<EOF | /tmp/venv23/bin/python3 -
from packaging.requirements import Requirement
req = Requirement('metomi-isodatetime==3.0.*')
print(f"{req.specifier.contains('3.0.0', prereleases=True)=}")
EOF
# => req.specifier.contains('3.0.0', prereleases=True)=True(Obs: related to pypa/setuptools#3802)