Version 6.2.0 have too strict urllib3 requirements #807
Description
Much like in #667, the elasticsearch library now conflicts with other libraries pulling in later versions of urllib3 1.23 or later (as was released last week).
~ $ rwt requests elasticsearch -- -c "import pkg_resources; pkg_resources.require('elasticsearch')"
Collecting requests
Using cached https://files.pythonhosted.org/packages/cc/15/e1c318dbc20032ffbe5628837ca0de2d5b116ffd1b849c699634010f6a5d/requests-2.19.0-py2.py3-none-any.whl
Collecting elasticsearch
Using cached https://files.pythonhosted.org/packages/c3/e3/146b675e6d0138a49c4b817b4e68170eb9b75cee7e71fa3ec69624c4f467/elasticsearch-6.2.0-py2.py3-none-any.whl
Collecting chardet<3.1.0,>=3.0.2 (from requests)
Using cached https://files.pythonhosted.org/packages/bc/a9/01ffebfb562e4274b6487b4bb1ddec7ca55ec7510b22e4c51f14098443b8/chardet-3.0.4-py2.py3-none-any.whl
Collecting urllib3<1.24,>=1.21.1 (from requests)
Using cached https://files.pythonhosted.org/packages/bd/c9/6fdd990019071a4a32a5e7cb78a1d92c53851ef4f56f62a3486e6a7d8ffb/urllib3-1.23-py2.py3-none-any.whl
Collecting certifi>=2017.4.17 (from requests)
Using cached https://files.pythonhosted.org/packages/7c/e6/92ad559b7192d846975fc916b65f667c7b8c3a32bea7372340bfe9a15fa5/certifi-2018.4.16-py2.py3-none-any.whl
Collecting idna<2.8,>=2.5 (from requests)
Using cached https://files.pythonhosted.org/packages/4b/2a/0276479a4b3caeb8a8c1af2f8e4355746a97fab05a372e4a2c6a6b876165/idna-2.7-py2.py3-none-any.whl
Installing collected packages: chardet, urllib3, certifi, idna, requests, elasticsearch
elasticsearch 6.2.0 has requirement urllib3<1.23,>=1.21.1, but you'll have urllib3 1.23 which is incompatible.
Successfully installed certifi-2018.4.16 chardet-3.0.4 elasticsearch-6.2.0 idna-2.7 requests-2.19.0 urllib3-1.23
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pkg_resources/__init__.py", line 888, in require
needed = self.resolve(parse_requirements(requirements))
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pkg_resources/__init__.py", line 779, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (urllib3 1.23 (/private/var/folders/c6/v7hnmq453xb6p2dbz1gqc6rr0000gn/T/rwt-vmmfz3tr), Requirement.parse('urllib3<1.23,>=1.21.1'), {'elasticsearch'})
It's bad practice to pin the upper bound for dependencies on a library, except in cases where there's a known or expected incompatibility to arise with that version.