64 lines
2.3 KiB
Python
64 lines
2.3 KiB
Python
|
from __future__ import annotations
|
||
|
|
|
||
|
|
import re
|
||
|
|
|
||
|
|
from collections.abc import Iterator, Set
|
||
|
|
|
||
|
|
|
||
|
|
_WHEEL_FILENAME_REGEX = re.compile(
|
||
|
|
r'(?P<distribution>.+)-(?P<version>.+)'
|
||
|
|
r'(-(?P<build_tag>.+))?-(?P<python_tag>.+)'
|
||
|
|
r'-(?P<abi_tag>.+)-(?P<platform_tag>.+)\.whl'
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
def check_dependency(
|
||
|
|
req_string: str, ancestral_req_strings: tuple[str, ...] = (), parent_extras: Set[str] = frozenset()
|
||
|
|
) -> Iterator[tuple[str, ...]]:
|
||
|
|
"""
|
||
|
|
Verify that a dependency and all of its dependencies are met.
|
||
|
|
|
||
|
|
:param req_string: Requirement string
|
||
|
|
:param parent_extras: Extras (eg. "test" in myproject[test])
|
||
|
|
:yields: Unmet dependencies
|
||
|
|
"""
|
||
|
|
import packaging.requirements
|
||
|
|
|
||
|
|
from ._compat import importlib
|
||
|
|
|
||
|
|
req = packaging.requirements.Requirement(req_string)
|
||
|
|
normalised_req_string = str(req)
|
||
|
|
|
||
|
|
# ``Requirement`` doesn't implement ``__eq__`` so we cannot compare reqs for
|
||
|
|
# equality directly but the string representation is stable.
|
||
|
|
if normalised_req_string in ancestral_req_strings:
|
||
|
|
# cyclical dependency, already checked.
|
||
|
|
return
|
||
|
|
|
||
|
|
if req.marker:
|
||
|
|
extras = frozenset(('',)).union(parent_extras)
|
||
|
|
# a requirement can have multiple extras but ``evaluate`` can
|
||
|
|
# only check one at a time.
|
||
|
|
if all(not req.marker.evaluate(environment={'extra': e}) for e in extras):
|
||
|
|
# if the marker conditions are not met, we pretend that the
|
||
|
|
# dependency is satisfied.
|
||
|
|
return
|
||
|
|
|
||
|
|
try:
|
||
|
|
dist = importlib.metadata.distribution(req.name)
|
||
|
|
except importlib.metadata.PackageNotFoundError:
|
||
|
|
# dependency is not installed in the environment.
|
||
|
|
yield (*ancestral_req_strings, normalised_req_string)
|
||
|
|
else:
|
||
|
|
if req.specifier and not req.specifier.contains(dist.version, prereleases=True):
|
||
|
|
# the installed version is incompatible.
|
||
|
|
yield (*ancestral_req_strings, normalised_req_string)
|
||
|
|
elif dist.requires:
|
||
|
|
for other_req_string in dist.requires:
|
||
|
|
# yields transitive dependencies that are not satisfied.
|
||
|
|
yield from check_dependency(other_req_string, (*ancestral_req_strings, normalised_req_string), req.extras)
|
||
|
|
|
||
|
|
|
||
|
|
def parse_wheel_filename(filename: str) -> re.Match[str] | None:
|
||
|
|
return _WHEEL_FILENAME_REGEX.match(filename)
|