def _warn_about_conflicts(self, conflict_details, new_resolver):
# type: (ConflictDetails, bool) -> None
package_set, (missing, conflicting) = conflict_details
if not missing and not conflicting:
return
parts = [] # type: List[str]
if not new_resolver:
parts.append(
"After October 2020 you may experience errors when installing "
"or updating packages. This is because pip will change the "
"way that it resolves dependency conflicts.\n")
parts.append(
"We recommend you use --use-feature=2020-resolver to test "
"your packages with the new resolver before it becomes the "
"default.\n")
elif not today_is_later_than(year=2020, month=7, day=31):
# NOTE: trailing newlines here are intentional
parts.append(
"Pip will install or upgrade your package(s) and its "
"dependencies without taking into account other packages you "
"already have installed. This may cause an uncaught "
"dependency conflict.\n")
form_link = "https://forms.gle/cWKMoDs8sUVE29hz9"
parts.append(
"If you would like pip to take your other packages into "
"account, please tell us here: {}\n".format(form_link))
# NOTE: There is some duplication here, with commands/check.py
for project_name in missing:
version = package_set[project_name][0]
for dependency in missing[project_name]:
message = ("{name} {version} requires {requirement}, "
"which is not installed.").format(
name=project_name,
version=version,
requirement=dependency[1],
)
parts.append(message)
for project_name in conflicting:
version = package_set[project_name][0]
for dep_name, dep_version, req in conflicting[project_name]:
message = (
"{name} {version} requires {requirement}, but you'll have "
"{dep_name} {dep_version} which is incompatible.").format(
name=project_name,
version=version,
requirement=req,
dep_name=dep_name,
dep_version=dep_version,
)
parts.append(message)
logger.critical("\n".join(parts))
logger.critical("\n".join(parts))
"pip's dependency resolver does not currently take into account "
"all the packages that are installed. This behaviour is the "
"source of the following dependency conflicts."
=======
if not new_resolver:
parts.append(
"After October 2020 you may experience errors when installing "
"or updating packages. This is because pip will change the "
"way that it resolves dependency conflicts.\n"
)
parts.append(
"We recommend you use --use-feature=2020-resolver to test "
"your packages with the new resolver before it becomes the "
"default.\n"
)
elif not today_is_later_than(year=2020, month=7, day=31):
# NOTE: trailing newlines here are intentional
parts.append(
"Pip will install or upgrade your package(s) and its "
"dependencies without taking into account other packages you "
"already have installed. This may cause an uncaught "
"dependency conflict.\n"
)
form_link = "https://forms.gle/cWKMoDs8sUVE29hz9"
parts.append(
"If you would like pip to take your other packages into "
"account, please tell us here: {}\n".format(form_link)
>>>>>>> 74c061954d5e927be4caafbd793e96a50563c265
)
# NOTE: There is some duplication here, with commands/check.py