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Warning for user when Windows default Path Limit is exceeded #10046

Merged
merged 14 commits into from
Jun 11, 2021
1 change: 1 addition & 0 deletions news/10045.feature.rst
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Added a warning message for errors caused due to Long Paths being disabled on Windows.
8 changes: 8 additions & 0 deletions src/pip/_internal/commands/install.py
Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
from pip._internal.req import install_given_reqs
from pip._internal.req.req_install import InstallRequirement
from pip._internal.req.req_tracker import get_requirement_tracker
from pip._internal.utils.compat import WINDOWS
from pip._internal.utils.distutils_args import parse_distutils_args
from pip._internal.utils.filesystem import test_writable_dir
from pip._internal.utils.misc import (
Expand Down Expand Up @@ -440,6 +441,13 @@ def run(self, options, args):
message = create_os_error_message(
error, show_traceback, options.use_user_site,
)
if WINDOWS and len(error) >= 280:
logger.warning(
'The following error can potentially be caused '
'because Long Paths is disabled on your system. '
'Please set LongPathsEnabled to 1 in the '
'registry and try again.'
)
logger.error(message, exc_info=show_traceback) # noqa

return ERROR
Expand Down