incompatible versions in the resolved dependencies - botocore & boto3

[tekumara]

Environment Versions

1. OS Type - macOS
2. Python version: python 3.6.10
3. pip version: 20.1.1
4. pip-tools version: 5.2.1

Steps to replicate

$ cat requirements.in
botocore==1.13.48
boto3>=1.10,<1.10.50

$ pip-compile -v
Using indexes:
  https://pypi.org/simple

                          ROUND 1
Current constraints:
  boto3<1.10.50,>=1.10 (from -r requirements.in (line 2))
  botocore==1.13.48 (from -r requirements.in (line 1))

Finding the best candidates:
  found candidate boto3==1.10.49 (constraint was >=1.10,<1.10.50)
  found candidate botocore==1.13.48 (constraint was ==1.13.48)

Finding secondary dependencies:
  boto3==1.10.49            requires botocore<1.14.0,>=1.13.49, jmespath<1.0.0,>=0.7.1, s3transfer<0.3.0,>=0.2.0
  botocore==1.13.48         requires docutils<0.16,>=0.10, jmespath<1.0.0,>=0.7.1, python-dateutil<3.0.0,>=2.1; python_version >= "2.7", urllib3<1.26,>=1.20; python_version >= "3.4"

New dependencies found in this round:
  adding ['botocore', '<1.14.0,>=1.13.49', '[]']
  adding ['docutils', '<0.16,>=0.10', '[]']
  adding ['jmespath', '<1.0.0,>=0.7.1', '[]']
  adding ['python-dateutil', '<3.0.0,>=2.1', '[]']
  adding ['s3transfer', '<0.3.0,>=0.2.0', '[]']
  adding ['urllib3', '<1.26,>=1.20', '[]']
Removed dependencies in this round:
------------------------------------------------------------
Result of round 1: not stable

                          ROUND 2
Current constraints:
  boto3<1.10.50,>=1.10 (from -r requirements.in (line 2))
  botocore<1.14.0,==1.13.48,>=1.13.49 (from -r requirements.in (line 1))
  docutils<0.16,>=0.10 (from botocore==1.13.48->-r requirements.in (line 1))
  jmespath<1.0.0,>=0.7.1 (from boto3==1.10.49->-r requirements.in (line 2))
  python-dateutil<3.0.0,>=2.1 (from botocore==1.13.48->-r requirements.in (line 1))
  s3transfer<0.3.0,>=0.2.0 (from boto3==1.10.49->-r requirements.in (line 2))
  urllib3<1.26,>=1.20 (from botocore==1.13.48->-r requirements.in (line 1))

Finding the best candidates:
  found candidate boto3==1.10.49 (constraint was >=1.10,<1.10.50)
Could not find a version that matches botocore<1.14.0,==1.13.48,>=1.13.49 (from -r requirements.in (line 1))
Tried: 0.4.1, 0.4.2, 0.5.0, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.6.0, 0.7.0, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.9.0, 0.9.1, 0.9.2, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.13.1, 0.14.0, 0.15.0, 0.15.1, 0.16.0, 0.17.0, 0.18.0, 0.19.0, 0.20.0, 0.21.0, 0.22.0, 0.23.0, 0.24.0, 0.25.0, 0.26.0, 0.27.0, 0.28.0, 0.29.0, 0.30.0, 0.31.0, 0.32.0, 0.33.0, 0.34.0, 0.35.0, 0.36.0, 0.37.0, 0.38.0, 0.39.0, 0.40.0, 0.41.0, 0.42.0, 0.43.0, 0.44.0, 0.45.0, 0.46.0, 0.47.0, 0.48.0, 0.49.0, 0.50.0, 0.51.0, 0.52.0, 0.53.0, 0.54.0, 0.55.0, 0.56.0, 0.57.0, 0.58.0, 0.59.0, 0.60.0, 0.61.0, 0.62.0, 0.63.0, 0.64.0, 0.65.0, 0.66.0, 0.67.0, 0.68.0, 0.69.0, 0.70.0, 0.71.0, 0.72.0, 0.73.0, 0.74.0, 0.75.0, 0.76.0, 0.77.0, 0.78.0, 0.79.0, 0.80.0, 0.81.0, 0.82.0, 0.83.0, 0.84.0, 0.85.0, 0.86.0, 0.87.0, 0.88.0, 0.89.0, 0.90.0, 0.91.0, 0.92.0, 0.93.0, 0.94.0, 0.95.0, 0.96.0, 0.97.0, 0.98.0, 0.99.0, 0.100.0, 0.101.0, 0.102.0, 0.103.0, 0.104.0, 0.105.0, 0.106.0, 0.107.0, 0.108.0, 0.109.0, 1.0.0, 1.0.0, 1.0.1, 1.0.1, 1.1.0, 1.1.0, 1.1.1, 1.1.1, 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Skipped pre-versions: 1.0.0a1, 1.0.0a2, 1.0.0a3, 1.0.0b1, 1.0.0b2, 1.0.0b3, 1.0.0rc1, 1.0.0rc1
There are incompatible versions in the resolved dependencies:
  botocore==1.13.48 (from -r requirements.in (line 1))
  botocore<1.14.0,>=1.13.49 (from boto3==1.10.49->-r requirements.in (line 2))

Expected result

Resolve to the following:

boto3==1.10.48
botocore==1.13.48
docutils==0.15.2
jmespath==0.10.0
python-dateutil==2.8.1
s3transfer==0.2.1
six==1.15.0
urllib3==1.25.10

This set is chosen by poetry and pipgrip.

Actual result

There are incompatible versions in the resolved dependencies:
  botocore==1.13.48 (from -r requirements.in (line 1))
  botocore<1.14.0,>=1.13.49 (from boto3==1.10.49->-r requirements.in (line 2))

[atugushev]

Hello @tekumara,

Thanks for the report! Currently, pip-tools doesn't have a proper deps resolver, but I believe as we adopt new pip's resolver (pypa/pip#988) this issue will be fixed.

[kushan-gunasekera]

The following solution worked for me.

https://stackoverflow.com/a/64025683/6194097

[atugushev]

New resolver from #1539 fixes the issue:

Details

❯ pip-compile --resolver backtracking
#
# This file is autogenerated by pip-compile with python 3.8
# To update, run:
#
#    pip-compile --resolver=backtracking
#
boto3==1.10.48
    # via -r requirements.in
botocore==1.13.48
    # via
    #   -r requirements.in
    #   boto3
    #   s3transfer
docutils==0.15.2
    # via botocore
jmespath==0.10.0
    # via
    #   boto3
    #   botocore
python-dateutil==2.8.2
    # via botocore
s3transfer==0.2.1
    # via boto3
six==1.16.0
    # via python-dateutil
urllib3==1.25.11
    # via botocore

[atugushev]

This has been fixed in #1539 with the backtracking resolver, try pip-compile --resolver backtracking. The resolver is released as part of pip-tools v6.8.0. Please let us know if it doesn't resolve your issue. Thanks!