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pipdeptree
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Fix --freeze option due to breaking changes in pip's internal api 

The 'pip._internal.metadata' modules were introduced in 21.1.1 and the
'pip._internal.operations.freeze.FrozenRequirement' class now expects
dist to be a subclass of 'pip._internal.metadata.BaseDistribution',
however the 'pip._internal.utils.misc.get_installed_distributions'
continues to return objects of type
pip._vendor.pkg_resources.DistInfoDistribution.

This is a hacky backward compatible (with older versions of pip) fix.

Fixes github issue #150.
This commit is contained in:
Vineet Naik 2021-07-31 11:20:25 +05:30
parent 5b5f348b0f
commit c2ae2ea3e7
1 changed files with 17 additions and 0 deletions
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17
pipdeptree.py
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@ -74,6 +74,23 @@ def guess_version(pkg_key, default='?'):
def frozen_req_from_dist(dist):
# The `pip._internal.metadata` modules were introduced in 21.1.1
# and the `pip._internal.operations.freeze.FrozenRequirement`
# class now expects dist to be a subclass of
# `pip._internal.metadata.BaseDistribution`, however the
# `pip._internal.utils.misc.get_installed_distributions` continues
# to return objects of type
# pip._vendor.pkg_resources.DistInfoDistribution.
#
# This is a hacky backward compatible (with older versions of pip)
# fix.
try:
from pip._internal import metadata
except ImportError:
pass
else:
dist = metadata.pkg_resources.Distribution(dist)
try:
return FrozenRequirement.from_dist(dist)
except TypeError: