from poetry docs: https://github.com/sdispater/poetry/blob/master/README.md#dependency-resolution https://github.com/sdispater/poetry/blob/master/README.md#de..

from poetry docs: https://github.com/sdispater/poetry/blob/master/README.md#dependency-resolution https://github.com/sdispater/poetry/blob/master/README.md#de... " Let's take an example: pipenv install oslo.utils==1.4.0 will fail with this error: Could not find a version that matches pbr!=0.7,!=2.1.0,<1.0,>=0.6,>=2.0.0 while Poetry will get you the right set of packages "