pip running under Python2 and then Python3 can't read cache

[aabdnn]

• Pip version: 10.0.1
• Python version: 2.7.10, 3.6.3
• Operating system: MacOSX

Description:

After upgrading to pip 10.0.1, whenever I run pip under different Python versions, there are problems reading the cache.

What I've run:

~% rm -rf ~/Library/Caches/pip
~% pip -V
pip 10.0.1 from /usr/local/venv/py2main/lib/python2.7/site-packages/pip (python 2.7)
~% pip list -o
~% pip3 -V
pip 10.0.1 from /usr/local/lib/python3.6/site-packages/pip (python 3.6)
~% pip3 list -o
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored
Cache entry deserialization failed, entry ignored

[StephanErb]

Maybe this is a regression of psf/cachecontrol#146?

[pradyunsg]

We are on a version of cachecontrol that has that patch.

pip/src/pip/_vendor/vendor.txt

Line 7 in daaa0fd

CacheControl==0.12.4

Pinging @dstufft on this.

[pradyunsg]

Maybe this is a regression of psf/cachecontrol#146?

Yep. It didn't sanitize the headers.

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Closing this issue as a duplicate of #5250.

[lock]

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