Installation fails due to conflicting botocore version

Hi, users are unable to run Dmn-python-lambda due to dependency conflict with botocore package. As shown in the following full dependency graph of Dmn-python-lambda, Dmn-python-lambda requires botocore>=1.5.62,<2.0.0，while boto3==1.4.4 requires botocore>=1.5.0,<1.6.0.

According to pip’s “first found wins” installation strategy, botocore 1.16.16 is the actually installed version. However, botocore 1.16.16 does not satisfy botocore>=1.5.0,<1.6.0.

Dependency tree-----------

dmn-python-lambda - 3.3.1
| +- boto3(install version:1.4.4 version range:==1.4.4)
| | +- botocore(install version:1.5.95 version range:>=1.5.0,<1.6.0)
| | | +- docutils(install version:0.14 version range:>=0.10)
| | | +- jmespath(install version:0.9.5 version range:<1.0.0,>=0.7.1)
| | | +- python-dateutil(install version:2.7.5 version range:>=2.1,<3.0.0)
| | | | +- six(install version:1.11.0 version range:*)
| | | | +- six(install version:1.11.0 version range:>=1.5)
| | +- jmespath(install version:0.9.5 version range:<1.0.0,>=0.7.1)
| | +- s3transfer(install version:0.1.13 version range:>=0.1.10,<0.2.0)
| | | +- botocore(install version:1.16.19 version range:>=1.3.0,<2.0.0)
| +- botocore(install version:1.16.19 version range:>=1.5.62,<2.0.0)
| +- click(install version:6.6 version range:==6.6)
| +- docutils(install version:0.14 version range:<0.15,>=0.12)
| +- futures(install version:3.3.0 version range:*)
| +- jmespath(install version:0.9.5 version range:>=0.9.0,<0.10.0)
| +- pyaml(install version:15.8.2 version range:==15.8.2)
| | +- pyyaml(install version:3.13 version range:*)
| +- python-dateutil(install version:2.7.5 version range:<2.8.0,>=2.5.3)
| | +- six(install version:1.11.0 version range:*)
| | +- six(install version:1.11.0 version range:>=1.5)
| +- pyyaml(install version:3.13 version range:>=3.11,<3.14)
| +- six(install version:1.11.0 version range:<1.12.0,>=1.10.0)

Thanks for your help. Best, Neolith

[NeolithEra]

Solution

1. Loosen the version range of boto3 to be >=1.4.4.
2. Remove your direct dependency botocore, and use the botocore transitively introduced by boto3.
3. Loosen the version range of botocore to be >=1.5.62,<1.6.0. @nficano Which solution do you prefer, 1 ,2 or 3? Please let me know your choice. May I pull a request to solve this issue?

[zacharyabresch]

I’m also having this issue.