Can't install boto3<1.8 and credstash

[grahamlyons]

Issue description

I'm trying install boto3 pinned to version <1.8 to work around an issue with moto (getmoto/moto#1800) and I'm also using credstash, which is pinned to ==1..14.

pipenv can't find a version of botocore to satisfy the dependencies but I don't understand why that's the case.

The version of boto3 pulled in is 1.7.84 and the version of botocore is set to <1.11.0 (https://github.com/boto/boto3/blob/1.7.84/setup.py#L17)

credstash requires boto3>=1.1.1 (https://github.com/fugue/credstash/blob/v1.14.0/setup.py#L18) which would be satisfied by 1.7.84.

Expected result

Based on the requirement constraints I would expect a lock file to be generated.

Actual result

$ pipenv lock -v 
Locking [dev-packages] dependencies...
Locking [packages] dependencies...
using sources: [{'url': 'https://pypi.org/simple', 'verify_ssl': True, 'name': 'pypi'}]
Using pip: -i https://pypi.org/simple

                          ROUND 1                           
Current constraints:
  boto3<1.8 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-7wh795vh-constraints.txt (line 2))
  credstash==1.14 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-7wh795vh-constraints.txt (line 3))

Finding the best candidates:
  found candidate boto3==1.7.84 (constraint was <1.8)
  found candidate credstash==1.14 (constraint was ==1.14)

Finding secondary dependencies:
  credstash==1.14           requires asn1crypto>=0.21.0, boto3>=1.1.1, botocore<1.13.0,>=1.12.5, cffi>=1.7, credstash==1.14; python_version != "3.2.*" and python_version != "3.0.*" and python
_version >= "2.6" and python_version != "3.1.*" and python_version != "3.3.*" and python_version < "4", cryptography<2.1,>=1.5, docutils>=0.10, enum34, idna>=2.1, ipaddress, jmespath<1.0.0,>=
0.7.1, pycparser, python-dateutil<3.0.0,>=2.1; python_version >= "2.7", s3transfer<0.2.0,>=0.1.10, six>=1.4.1, urllib3<1.24,>=1.20
  boto3==1.7.84             requires boto3==1.7.84, botocore<1.11.0,>=1.10.84, docutils>=0.10, jmespath<1.0.0,>=0.7.1, python-dateutil<3.0.0,>=2.1; python_version >= "2.7", s3transfer<0.2.0,>
=0.1.10, six>=1.5

New dependencies found in this round:
  adding ['asn1crypto', '>=0.21.0', '[]']
  adding ['boto3', '==1.7.84,>=1.1.1', '[]']
  adding ['botocore', '<1.11.0,<1.13.0,>=1.10.84,>=1.12.5', '[]']
  adding ['cffi', '>=1.7', '[]']
  adding ['credstash', '==1.14', '[]']
  adding ['cryptography', '<2.1,>=1.5', '[]']
  adding ['docutils', '>=0.10', '[]']
  adding ['enum34', '', '[]']
  adding ['idna', '>=2.1', '[]']
  adding ['ipaddress', '', '[]']
  adding ['jmespath', '<1.0.0,>=0.7.1', '[]']
  adding ['pycparser', '', '[]']
  adding ['python-dateutil', '<3.0.0,>=2.1', '[]']
  adding ['s3transfer', '<0.2.0,>=0.1.10', '[]']
  adding ['six', '>=1.4.1,>=1.5', '[]']
  adding ['urllib3', '<1.24,>=1.20', '[]']
Removed dependencies in this round:
Unsafe dependencies in this round:
------------------------------------------------------------
Result of round 1: not stable

                          ROUND 2                           
Current constraints:
  asn1crypto>=0.21.0
  boto3<1.8,==1.7.84,>=1.1.1 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-7wh795vh-constraints.txt (line 2))
  botocore<1.11.0,<1.13.0,>=1.10.84,>=1.12.5
  cffi>=1.7
  credstash==1.14 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-7wh795vh-constraints.txt (line 3))
  cryptography<2.1,>=1.5
  docutils>=0.10
  enum34
  idna>=2.1
  ipaddress
  jmespath<1.0.0,>=0.7.1
  pycparser
  python-dateutil<3.0.0,>=2.1
  s3transfer<0.2.0,>=0.1.10
  six>=1.4.1,>=1.5
  urllib3<1.24,>=1.20

Finding the best candidates:
  found candidate asn1crypto==0.24.0 (constraint was >=0.21.0)
  found candidate boto3==1.7.84 (constraint was >=1.1.1,==1.7.84,<1.8)
Using pip: -i https://pypi.org/simple

                          ROUND 1  
Current constraints:                                                                                                                                                                 
  boto3<1.8 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-528jxmoo-constraints.txt (line 2))
  credstash==1.14 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-528jxmoo-constraints.txt (line 3))

Finding the best candidates:
  found candidate boto3==1.7.84 (constraint was <1.8)
  found candidate credstash==1.14 (constraint was ==1.14)

Finding secondary dependencies:
  boto3==1.7.84             requires boto3==1.7.84, botocore<1.11.0,>=1.10.84, docutils>=0.10, jmespath<1.0.0,>=0.7.1, python-dateutil<3.0.0,>=2.1; python_version >= "2.7", s3transfer<0.2.0,>
=0.1.10, six>=1.5
  credstash==1.14           requires asn1crypto>=0.21.0, boto3>=1.1.1, botocore<1.13.0,>=1.12.5, cffi>=1.7, credstash==1.14; python_version != "3.2.*" and python_version != "3.0.*" and python
_version >= "2.6" and python_version != "3.1.*" and python_version != "3.3.*" and python_version < "4", cryptography<2.1,>=1.5, docutils>=0.10, enum34, idna>=2.1, ipaddress, jmespath<1.0.0,>=
0.7.1, pycparser, python-dateutil<3.0.0,>=2.1; python_version >= "2.7", s3transfer<0.2.0,>=0.1.10, six>=1.4.1, urllib3<1.24,>=1.20

New dependencies found in this round:
  adding ['asn1crypto', '>=0.21.0', '[]']
  adding ['boto3', '==1.7.84,>=1.1.1', '[]']
  adding ['botocore', '<1.11.0,<1.13.0,>=1.10.84,>=1.12.5', '[]']
  adding ['cffi', '>=1.7', '[]']
  adding ['credstash', '==1.14', '[]']
  adding ['cryptography', '<2.1,>=1.5', '[]']
  adding ['docutils', '>=0.10', '[]']
  adding ['enum34', '', '[]']
  adding ['idna', '>=2.1', '[]']
  adding ['ipaddress', '', '[]']
  adding ['jmespath', '<1.0.0,>=0.7.1', '[]']
  adding ['pycparser', '', '[]']
  adding ['python-dateutil', '<3.0.0,>=2.1', '[]']
  adding ['s3transfer', '<0.2.0,>=0.1.10', '[]']
  adding ['six', '>=1.4.1,>=1.5', '[]']
  adding ['urllib3', '<1.24,>=1.20', '[]']
Removed dependencies in this round:
Unsafe dependencies in this round:
------------------------------------------------------------
Result of round 1: not stable

                          ROUND 2                           
Current constraints:
  asn1crypto>=0.21.0
  boto3<1.8,==1.7.84,>=1.1.1 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-528jxmoo-constraints.txt (line 2))
  botocore<1.11.0,<1.13.0,>=1.10.84,>=1.12.5
  cffi>=1.7
  credstash==1.14 (from -r /tmp/pipenv-ns8sppw2-requirements/pipenv-528jxmoo-constraints.txt (line 3))
  cryptography<2.1,>=1.5
  docutils>=0.10
  enum34
  idna>=2.1
  ipaddress
  jmespath<1.0.0,>=0.7.1
  pycparser
  python-dateutil<3.0.0,>=2.1
  s3transfer<0.2.0,>=0.1.10
  six>=1.4.1,>=1.5
  urllib3<1.24,>=1.20                                                                                                                                                                 

Finding the best candidates:
  found candidate asn1crypto==0.24.0 (constraint was >=0.21.0)
  found candidate boto3==1.7.84 (constraint was >=1.1.1,==1.7.84,<1.8)

Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  You can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
Could not find a version that matches botocore<1.11.0,<1.13.0,>=1.10.84,>=1.12.5
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, 1.1.2, 1.1.2, 1.1.3, 1.1.3, 1.1.4, 1.1.4, 1.1.5, 1.1.5, 1.1.6, 1.1.6, 1.1.7, 1.1.7, 1.1.8, 1.1.8, 1.1.9, 1.1.9, 1.1.10, 1.1.10, 1.1.11, 1.1.11, 1
.1.12, 1.1.12, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 1.2.7, 1.2.7, 1.2.8, 1.2.8, 1.2.9, 1.2.9, 1.2.10, 1.2.10, 1.2.11, 1.2.11, 1.3.
0, 1.3.0, 1.3.1, 1.3.1, 1.3.2, 1.3.2, 1.3.3, 1.3.3, 1.3.4, 1.3.4, 1.3.5, 1.3.5, 1.3.6, 1.3.6, 1.3.7, 1.3.7, 1.3.8, 1.3.8, 1.3.9, 1.3.9, 1.3.10, 1.3.10, 1.3.11, 1.3.11, 1.3.12, 1.3.12, 1.3.13,
 1.3.13, 1.3.14, 1.3.14, 1.3.15, 1.3.15, 1.3.16, 1.3.16, 1.3.17, 1.3.17, 1.3.18, 1.3.18, 1.3.19, 1.3.19, 1.3.20, 1.3.20, 1.3.21, 1.3.21, 1.3.22, 1.3.22, 1.3.23, 1.3.23, 1.3.24, 1.3.24, 1.3.25
, 1.3.25, 1.3.26, 1.3.26, 1.3.27, 1.3.27, 1.3.28, 1.3.28, 1.3.29, 1.3.29, 1.3.30, 1.3.30, 1.4.0, 1.4.0, 1.4.1, 1.4.1, 1.4.2, 1.4.2, 1.4.3, 1.4.3, 1.4.4, 1.4.4, 1.4.5, 1.4.5, 1.4.6, 1.4.6, 1.4
.7, 1.4.7, 1.4.8, 1.4.8, 1.4.9, 1.4.9, 1.4.10, 1.4.10, 1.4.11, 1.4.11, 1.4.12, 1.4.12, 1.4.13, 1.4.13, 1.4.14, 1.4.14, 1.4.15, 1.4.15, 1.4.16, 1.4.16, 1.4.17, 1.4.17, 1.4.18, 1.4.18, 1.4.19, 
1.4.19, 1.4.20, 1.4.20, 1.4.21, 1.4.21, 1.4.22, 1.4.22, 1.4.23, 1.4.23, 1.4.24, 1.4.24, 1.4.25, 1.4.25, 1.4.26, 1.4.26, 1.4.27, 1.4.27, 1.4.28, 1.4.28, 1.4.29, 1.4.29, 1.4.30, 1.4.30, 1.4.31,
 1.4.31, 1.4.32, 1.4.32, 1.4.33, 1.4.33, 1.4.34, 1.4.34, 1.4.35, 1.4.35, 1.4.36, 1.4.36, 1.4.37, 1.4.37, 1.4.38, 1.4.38, 1.4.39, 1.4.39, 1.4.40, 1.4.40, 1.4.41, 1.4.41, 1.4.42, 1.4.42, 1.4.43
, 1.4.43, 1.4.44, 1.4.44, 1.4.46, 1.4.46, 1.4.47, 1.4.47, 1.4.48, 1.4.48, 1.4.49, 1.4.49, 1.4.50, 1.4.50, 1.4.51, 1.4.51, 1.4.52, 1.4.52, 1.4.53, 1.4.53, 1.4.54, 1.4.54, 1.4.55, 1.4.55, 1.4.5
6, 1.4.56, 1.4.57, 1.4.57, 1.4.58, 1.4.58, 1.4.59, 1.4.59, 1.4.60, 1.4.60, 1.4.61, 1.4.61, 1.4.62, 1.4.62, 1.4.63, 1.4.63, 1.4.64, 1.4.64, 1.4.65, 1.4.65, 1.4.66, 1.4.66, 1.4.67, 1.4.67, 1.4.
68, 1.4.68, 1.4.69, 1.4.69, 1.4.70, 1.4.70, 1.4.71, 1.4.71, 1.4.72, 1.4.72, 1.4.73, 1.4.73, 1.4.74, 1.4.74, 1.4.75, 1.4.75, 1.4.76, 1.4.76, 1.4.77, 1.4.77, 1.4.78, 1.4.78, 1.4.79, 1.4.79, 1.4
.80, 1.4.80, 1.4.81, 1.4.81, 1.4.82, 1.4.82, 1.4.83, 1.4.83, 1.4.84, 1.4.84, 1.4.85, 1.4.85, 1.4.86, 1.4.86, 1.4.87, 1.4.87, 1.4.88, 1.4.88, 1.4.89, 1.4.89, 1.4.90, 1.4.90, 1.4.91, 1.4.91, 1.
4.92, 1.4.92, 1.4.93, 1.4.93, 1.5.0, 1.5.0, 1.5.1, 1.5.1, 1.5.2, 1.5.2, 1.5.3, 1.5.3, 1.5.4, 1.5.4, 1.5.5, 1.5.5, 1.5.6, 1.5.6, 1.5.7, 1.5.7, 1.5.8, 1.5.8, 1.5.9, 1.5.9, 1.5.10, 1.5.10, 1.5.1
1, 1.5.11, 1.5.12, 1.5.12, 1.5.13, 1.5.13, 1.5.14, 1.5.14, 1.5.15, 1.5.15, 1.5.16, 1.5.16, 1.5.17, 1.5.17, 1.5.18, 1.5.18, 1.5.19, 1.5.19, 1.5.20, 1.5.20, 1.5.21, 1.5.21, 1.5.22, 1.5.22, 1.5.
23, 1.5.23, 1.5.24, 1.5.24, 1.5.25, 1.5.25, 1.5.26, 1.5.26, 1.5.27, 1.5.27, 1.5.28, 1.5.28, 1.5.29, 1.5.29, 1.5.30, 1.5.30, 1.5.31, 1.5.31, 1.5.32, 1.5.32, 1.5.33, 1.5.33, 1.5.34, 1.5.34, 1.5
.35, 1.5.35, 1.5.36, 1.5.36, 1.5.37, 1.5.37, 1.5.38, 1.5.38, 1.5.39, 1.5.39, 1.5.40, 1.5.40, 1.5.41, 1.5.41, 1.5.42, 1.5.42, 1.5.43, 1.5.43, 1.5.44, 1.5.44, 1.5.45, 1.5.45, 1.5.46, 1.5.46, 1.
5.47, 1.5.47, 1.5.48, 1.5.48, 1.5.49, 1.5.49, 1.5.50, 1.5.50, 1.5.51, 1.5.51, 1.5.52, 1.5.52, 1.5.53, 1.5.53, 1.5.54, 1.5.54, 1.5.55, 1.5.55, 1.5.56, 1.5.56, 1.5.57, 1.5.57, 1.5.58, 1.5.58, 1
.5.59, 1.5.59, 1.5.60, 1.5.60, 1.5.61, 1.5.61, 1.5.62, 1.5.62, 1.5.63, 1.5.63, 1.5.64, 1.5.64, 1.5.65, 1.5.65, 1.5.66, 1.5.66, 1.5.67, 1.5.67, 1.5.68, 1.5.68, 1.5.69, 1.5.69, 1.5.70, 1.5.70, 
1.5.71, 1.5.71, 1.5.72, 1.5.72, 1.5.73, 1.5.73, 1.5.74, 1.5.74, 1.5.75, 1.5.75, 1.5.76, 1.5.76, 1.5.77, 1.5.77, 1.5.78, 1.5.78, 1.5.79, 1.5.79, 1.5.80, 1.5.80, 1.5.81, 1.5.81, 1.5.82, 1.5.82,
 1.5.83, 1.5.83, 1.5.84, 1.5.84, 1.5.85, 1.5.85, 1.5.86, 1.5.86, 1.5.87, 1.5.87, 1.5.88, 1.5.88, 1.5.89, 1.5.89, 1.5.90, 1.5.90, 1.5.91, 1.5.91, 1.5.92, 1.5.92, 1.5.93, 1.5.93, 1.5.94, 1.5.94
, 1.5.95, 1.5.95, 1.6.0, 1.6.0, 1.6.1, 1.6.1, 1.6.2, 1.6.2, 1.6.3, 1.6.3, 1.6.4, 1.6.4, 1.6.5, 1.6.5, 1.6.6, 1.6.6, 1.6.7, 1.6.7, 1.6.8, 1.6.8, 1.7.0, 1.7.0, 1.7.1, 1.7.1, 1.7.2, 1.7.2, 1.7.3
, 1.7.3, 1.7.4, 1.7.4, 1.7.5, 1.7.5, 1.7.6, 1.7.6, 1.7.7, 1.7.7, 1.7.8, 1.7.8, 1.7.9, 1.7.9, 1.7.10, 1.7.10, 1.7.11, 1.7.11, 1.7.12, 1.7.12, 1.7.13, 1.7.13, 1.7.14, 1.7.14, 1.7.15, 1.7.15, 1.
7.16, 1.7.16, 1.7.17, 1.7.17, 1.7.18, 1.7.18, 1.7.19, 1.7.19, 1.7.20, 1.7.20, 1.7.21, 1.7.21, 1.7.22, 1.7.22, 1.7.23, 1.7.23, 1.7.24, 1.7.24, 1.7.25, 1.7.25, 1.7.26, 1.7.26, 1.7.27, 1.7.27, 1
.7.28, 1.7.28, 1.7.29, 1.7.29, 1.7.30, 1.7.30, 1.7.31, 1.7.31, 1.7.32, 1.7.32, 1.7.33, 1.7.33, 1.7.34, 1.7.34, 1.7.35, 1.7.35, 1.7.36, 1.7.36, 1.7.37, 1.7.37, 1.7.38, 1.7.38, 1.7.39, 1.7.39, 
1.7.40, 1.7.40, 1.7.41, 1.7.41, 1.7.42, 1.7.42, 1.7.43, 1.7.43, 1.7.44, 1.7.44, 1.7.45, 1.7.45, 1.7.46, 1.7.46, 1.7.47, 1.7.47, 1.7.48, 1.7.48, 1.8.0, 1.8.0, 1.8.1, 1.8.1, 1.8.2, 1.8.2, 1.8.3
, 1.8.3, 1.8.4, 1.8.4, 1.8.5, 1.8.5, 1.8.6, 1.8.6, 1.8.7, 1.8.7, 1.8.8, 1.8.8, 1.8.9, 1.8.9, 1.8.10, 1.8.10, 1.8.11, 1.8.11, 1.8.12, 1.8.12, 1.8.13, 1.8.13, 1.8.14, 1.8.14, 1.8.15, 1.8.15, 1.
8.16, 1.8.16, 1.8.17, 1.8.17, 1.8.18, 1.8.18, 1.8.19, 1.8.19, 1.8.20, 1.8.20, 1.8.21, 1.8.21, 1.8.22, 1.8.22, 1.8.23, 1.8.23, 1.8.24, 1.8.24, 1.8.25, 1.8.25, 1.8.26, 1.8.26, 1.8.27, 1.8.27, 1
.8.28, 1.8.28, 1.8.29, 1.8.29, 1.8.30, 1.8.30, 1.8.31, 1.8.31, 1.8.32, 1.8.32, 1.8.33, 1.8.33, 1.8.34, 1.8.34, 1.8.35, 1.8.35, 1.8.36, 1.8.36, 1.8.37, 1.8.37, 1.8.38, 1.8.38, 1.8.39, 1.8.39, 
1.8.40, 1.8.40, 1.8.41, 1.8.41, 1.8.42, 1.8.42, 1.8.43, 1.8.43, 1.8.44, 1.8.44, 1.8.45, 1.8.45, 1.8.46, 1.8.46, 1.8.47, 1.8.47, 1.8.48, 1.8.48, 1.8.49, 1.8.49, 1.8.50, 1.8.50, 1.9.0, 1.9.0, 1
.9.1, 1.9.1, 1.9.2, 1.9.2, 1.9.3, 1.9.3, 1.9.4, 1.9.4, 1.9.5, 1.9.5, 1.9.6, 1.9.6, 1.9.7, 1.9.7, 1.9.8, 1.9.8, 1.9.9, 1.9.9, 1.9.10, 1.9.10, 1.9.11, 1.9.11, 1.9.12, 1.9.12, 1.9.13, 1.9.13, 1.
9.14, 1.9.14, 1.9.15, 1.9.15, 1.9.16, 1.9.16, 1.9.17, 1.9.17, 1.9.18, 1.9.18, 1.9.19, 1.9.19, 1.9.20, 1.9.20, 1.9.21, 1.9.21, 1.9.22, 1.9.22, 1.9.23, 1.9.23, 1.10.0, 1.10.0, 1.10.1, 1.10.1, 1
.10.2, 1.10.2, 1.10.3, 1.10.3, 1.10.4, 1.10.4, 1.10.5, 1.10.5, 1.10.6, 1.10.6, 1.10.7, 1.10.7, 1.10.8, 1.10.8, 1.10.9, 1.10.9, 1.10.10, 1.10.10, 1.10.11, 1.10.11, 1.10.12, 1.10.12, 1.10.13, 1
.10.13, 1.10.14, 1.10.14, 1.10.15, 1.10.15, 1.10.16, 1.10.16, 1.10.17, 1.10.17, 1.10.18, 1.10.18, 1.10.19, 1.10.19, 1.10.20, 1.10.20, 1.10.21, 1.10.21, 1.10.22, 1.10.22, 1.10.23, 1.10.23, 1.1
0.24, 1.10.24, 1.10.25, 1.10.25, 1.10.26, 1.10.26, 1.10.27, 1.10.27, 1.10.28, 1.10.28, 1.10.29, 1.10.29, 1.10.30, 1.10.30, 1.10.31, 1.10.31, 1.10.32, 1.10.32, 1.10.33, 1.10.33, 1.10.34, 1.10.
34, 1.10.35, 1.10.35, 1.10.36, 1.10.36, 1.10.37, 1.10.37, 1.10.38, 1.10.38, 1.10.39, 1.10.39, 1.10.40, 1.10.40, 1.10.41, 1.10.41, 1.10.42, 1.10.42, 1.10.43, 1.10.43, 1.10.44, 1.10.44, 1.10.45
, 1.10.45, 1.10.46, 1.10.46, 1.10.47, 1.10.47, 1.10.48, 1.10.48, 1.10.49, 1.10.49, 1.10.50, 1.10.50, 1.10.51, 1.10.51, 1.10.52, 1.10.52, 1.10.53, 1.10.53, 1.10.54, 1.10.54, 1.10.55, 1.10.55, 
1.10.56, 1.10.56, 1.10.57, 1.10.57, 1.10.58, 1.10.58, 1.10.59, 1.10.59, 1.10.60, 1.10.60, 1.10.61, 1.10.61, 1.10.62, 1.10.62, 1.10.63, 1.10.63, 1.10.64, 1.10.64, 1.10.65, 1.10.65, 1.10.66, 1.
10.66, 1.10.67, 1.10.67, 1.10.68, 1.10.68, 1.10.69, 1.10.69, 1.10.70, 1.10.70, 1.10.71, 1.10.71, 1.10.72, 1.10.72, 1.10.73, 1.10.73, 1.10.74, 1.10.74, 1.10.75, 1.10.75, 1.10.76, 1.10.76, 1.10
.77, 1.10.77, 1.10.78, 1.10.78, 1.10.79, 1.10.79, 1.10.80, 1.10.80, 1.10.81, 1.10.81, 1.10.82, 1.10.82, 1.10.83, 1.10.83, 1.10.84, 1.10.84, 1.11.0, 1.11.0, 1.11.1, 1.11.1, 1.11.2, 1.11.2, 1.1
1.3, 1.11.3, 1.11.4, 1.11.4, 1.11.5, 1.11.5, 1.11.6, 1.11.6, 1.11.7, 1.11.7, 1.11.8, 1.11.8, 1.11.9, 1.11.9, 1.12.0, 1.12.0, 1.12.1, 1.12.1, 1.12.2, 1.12.2, 1.12.3, 1.12.3, 1.12.4, 1.12.4, 1.
12.5, 1.12.5

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.
Warning: Your dependencies could not be resolved. You likely have a mismatch in your sub-dependencies.
  You can use $ pipenv install --skip-lock to bypass this mechanism, then run $ pipenv graph to inspect the situation.
  Hint: try $ pipenv lock --pre if it is a pre-release dependency.
Could not find a version that matches botocore<1.11.0,<1.13.0,>=1.10.84,>=1.12.5
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, 1.1.2, 1.1.2, 1.1.3, 1.1.3, 1.1.4, 1.1.4, 1.1.5, 1.1.5, 1.1.6, 1.1.6, 1.1.7, 1.1.7, 1.1.8, 1.1.8, 1.1.9, 1.1.9, 1.1.10, 1.1.10, 1.1.11, 1.1.11, 1.1.12, 1.1.12, 1.2.0, 1.2.0, 1.2.1, 1.2.1, 1.2.2, 1.2.2, 1.2.3, 1.2.3, 1.2.4, 1.2.4, 1.2.5, 1.2.5, 1.2.6, 1.2.6, 1.2.7, 1.2.7, 1.2.8, 1.2.8, 1.2.9, 1.2.9, 1.2.10, 1.2.10, 1.2.11, 1.2.11, 1.3.0, 1.3.0, 1.3.1, 1.3.1, 1.3.2, 1.3.2, 1.3.3, 1.3.3, 1.3.4, 1.3.4, 1.3.5, 1.3.5, 1.3.6, 1.3.6, 1.3.7, 1.3.7, 1.3.8, 1.3.8, 1.3.9, 1.3.9, 1.3.10, 1.3.10, 1.3.11, 1.3.11, 1.3.12, 1.3.12, 1.3.13, 1.3.13, 1.3.14, 1.3.14, 1.3.15, 1.3.15, 1.3.16, 1.3.16, 1.3.17, 1.3.17, 1.3.18, 1.3.18, 1.3.19, 1.3.19, 1.3.20, 1.3.20, 1.3.21, 1.3.21, 1.3.22, 1.3.22, 1.3.23, 1.3.23, 1.3.24, 1.3.24, 1.3.25, 1.3.25, 1.3.26, 1.3.26, 1.3.27, 1.3.27, 1.3.28, 1.3.28, 1.3.29, 1.3.29, 1.3.30, 1.3.30, 1.4.0, 1.4.0, 1.4.1, 1.4.1, 1.4.2, 1.4.2, 1.4.3, 1.4.3, 1.4.4, 1.4.4, 1.4.5, 1.4.5, 1.4.6, 1.4.6, 1.4.7, 1.4.7, 1.4.8, 1.4.8, 1.4.9, 1.4.9, 1.4.10, 1.4.10, 1.4.11, 1.4.11, 1.4.12, 1.4.12, 1.4.13, 1.4.13, 1.4.14, 1.4.14, 1.4.15, 1.4.15, 1.4.16, 1.4.16, 1.4.17, 1.4.17, 1.4.18, 1.4.18, 1.4.19, 1.4.19, 1.4.20, 1.4.20, 1.4.21, 1.4.21, 1.4.22, 1.4.22, 1.4.23, 1.4.23, 1.4.24, 1.4.24, 1.4.25, 1.4.25, 1.4.26, 1.4.26, 1.4.27, 1.4.27, 1.4.28, 1.4.28, 1.4.29, 1.4.29, 1.4.30, 1.4.30, 1.4.31, 1.4.31, 1.4.32, 1.4.32, 1.4.33, 1.4.33, 1.4.34, 1.4.34, 1.4.35, 1.4.35, 1.4.36, 1.4.36, 1.4.37, 1.4.37, 1.4.38, 1.4.38, 1.4.39, 1.4.39, 1.4.40, 1.4.40, 1.4.41, 1.4.41, 1.4.42, 1.4.42, 1.4.43, 1.4.43, 1.4.44, 1.4.44, 1.4.46, 1.4.46, 1.4.47, 1.4.47, 1.4.48, 1.4.48, 1.4.49, 1.4.49, 1.4.50, 1.4.50, 1.4.51, 1.4.51, 1.4.52, 1.4.52, 1.4.53, 1.4.53, 1.4.54, 1.4.54, 1.4.55, 1.4.55, 1.4.56, 1.4.56, 1.4.57, 1.4.57, 1.4.58, 1.4.58, 1.4.59, 1.4.59, 1.4.60, 1.4.60, 1.4.61, 1.4.61, 1.4.62, 1.4.62, 1.4.63, 1.4.63, 1.4.64, 1.4.64, 1.4.65, 1.4.65, 1.4.66, 1.4.66, 1.4.67, 1.4.67, 1.4.68, 1.4.68, 1.4.69, 1.4.69, 1.4.70, 1.4.70, 1.4.71, 1.4.71, 1.4.72, 1.4.72, 1.4.73, 1.4.73, 1.4.74, 1.4.74, 1.4.75, 1.4.75, 1.4.76, 1.4.76, 1.4.77, 1.4.77, 1.4.78, 1.4.78, 1.4.79, 1.4.79, 1.4.80, 1.4.80, 1.4.81, 1.4.81, 1.4.82, 1.4.82, 1.4.83, 1.4.83, 1.4.84, 1.4.84, 1.4.85, 1.4.85, 1.4.86, 1.4.86, 1.4.87, 1.4.87, 1.4.88, 1.4.88, 1.4.89, 1.4.89, 1.4.90, 1.4.90, 1.4.91, 1.4.91, 1.4.92, 1.4.92, 1.4.93, 1.4.93, 1.5.0, 1.5.0, 1.5.1, 1.5.1, 1.5.2, 1.5.2, 1.5.3, 1.5.3, 1.5.4, 1.5.4, 1.5.5, 1.5.5, 1.5.6, 1.5.6, 1.5.7, 1.5.7, 1.5.8, 1.5.8, 1.5.9, 1.5.9, 1.5.10, 1.5.10, 1.5.11, 1.5.11, 1.5.12, 1.5.12, 1.5.13, 1.5.13, 1.5.14, 1.5.14, 1.5.15, 1.5.15, 1.5.16, 1.5.16, 1.5.17, 1.5.17, 1.5.18, 1.5.18, 1.5.19, 1.5.19, 1.5.20, 1.5.20, 1.5.21, 1.5.21, 1.5.22, 1.5.22, 1.5.23, 1.5.23, 1.5.24, 1.5.24, 1.5.25, 1.5.25, 1.5.26, 1.5.26, 1.5.27, 1.5.27, 1.5.28, 1.5.28, 1.5.29, 1.5.29, 1.5.30, 1.5.30, 1.5.31, 1.5.31, 1.5.32, 1.5.32, 1.5.33, 1.5.33, 1.5.34, 1.5.34, 1.5.35, 1.5.35, 1.5.36, 1.5.36, 1.5.37, 1.5.37, 1.5.38, 1.5.38, 1.5.39, 1.5.39, 1.5.40, 1.5.40, 1.5.41, 1.5.41, 1.5.42, 1.5.42, 1.5.43, 1.5.43, 1.5.44, 1.5.44, 1.5.45, 1.5.45, 1.5.46, 1.5.46, 1.5.47, 1.5.47, 1.5.48, 1.5.48, 1.5.49, 1.5.49, 1.5.50, 1.5.50, 1.5.51, 1.5.51, 1.5.52, 1.5.52, 1.5.53, 1.5.53, 1.5.54, 1.5.54, 1.5.55, 1.5.55, 1.5.56, 1.5.56, 1.5.57, 1.5.57, 1.5.58, 1.5.58, 1.5.59, 1.5.59, 1.5.60, 1.5.60, 1.5.61, 1.5.61, 1.5.62, 1.5.62, 1.5.63, 1.5.63, 1.5.64, 1.5.64, 1.5.65, 1.5.65, 1.5.66, 1.5.66, 1.5.67, 1.5.67, 1.5.68, 1.5.68, 1.5.69, 1.5.69, 1.5.70, 1.5.70, 1.5.71, 1.5.71, 1.5.72, 1.5.72, 1.5.73, 1.5.73, 1.5.74, 1.5.74, 1.5.75, 1.5.75, 1.5.76, 1.5.76, 1.5.77, 1.5.77, 1.5.78, 1.5.78, 1.5.79, 1.5.79, 1.5.80, 1.5.80, 1.5.81, 1.5.81, 1.5.82, 1.5.82, 1.5.83, 1.5.83, 1.5.84, 1.5.84, 1.5.85, 1.5.85, 1.5.86, 1.5.86, 1.5.87, 1.5.87, 1.5.88, 1.5.88, 1.5.89, 1.5.89, 1.5.90, 1.5.90, 1.5.91, 1.5.91, 1.5.92, 1.5.92, 1.5.93, 1.5.93, 1.5.94, 1.5.94, 1.5.95, 1.5.95, 1.6.0, 1.6.0, 1.6.1, 1.6.1, 1.6.2, 1.6.2, 1.6.3, 1.6.3, 1.6.4, 1.6.4, 1.6.5, 1.6.5, 1.6.6, 1.6.6, 1.6.7, 1.6.7, 1.6.8, 1.6.8, 1.7.0, 1.7.0, 1.7.1, 1.7.1, 1.7.2, 1.7.2, 1.7.3, 1.7.3, 1.7.4, 1.7.4, 1.7.5, 1.7.5, 1.7.6, 1.7.6, 1.7.7, 1.7.7, 1.7.8, 1.7.8, 1.7.9, 1.7.9, 1.7.10, 1.7.10, 1.7.11, 1.7.11, 1.7.12, 1.7.12, 1.7.13, 1.7.13, 1.7.14, 1.7.14, 1.7.15, 1.7.15, 1.7.16, 1.7.16, 1.7.17, 1.7.17, 1.7.18, 1.7.18, 1.7.19, 1.7.19, 1.7.20, 1.7.20, 1.7.21, 1.7.21, 1.7.22, 1.7.22, 1.7.23, 1.7.23, 1.7.24, 1.7.24, 1.7.25, 1.7.25, 1.7.26, 1.7.26, 1.7.27, 1.7.27, 1.7.28, 1.7.28, 1.7.29, 1.7.29, 1.7.30, 1.7.30, 1.7.31, 1.7.31, 1.7.32, 1.7.32, 1.7.33, 1.7.33, 1.7.34, 1.7.34, 1.7.35, 1.7.35, 1.7.36, 1.7.36, 1.7.37, 1.7.37, 1.7.38, 1.7.38, 1.7.39, 1.7.39, 1.7.40, 1.7.40, 1.7.41, 1.7.41, 1.7.42, 1.7.42, 1.7.43, 1.7.43, 1.7.44, 1.7.44, 1.7.45, 1.7.45, 1.7.46, 1.7.46, 1.7.47, 1.7.47, 1.7.48, 1.7.48, 1.8.0, 1.8.0, 1.8.1, 1.8.1, 1.8.2, 1.8.2, 1.8.3, 1.8.3, 1.8.4, 1.8.4, 1.8.5, 1.8.5, 1.8.6, 1.8.6, 1.8.7, 1.8.7, 1.8.8, 1.8.8, 1.8.9, 1.8.9, 1.8.10, 1.8.10, 1.8.11, 1.8.11, 1.8.12, 1.8.12, 1.8.13, 1.8.13, 1.8.14, 1.8.14, 1.8.15, 1.8.15, 1.8.16, 1.8.16, 1.8.17, 1.8.17, 1.8.18, 1.8.18, 1.8.19, 1.8.19, 1.8.20, 1.8.20, 1.8.21, 1.8.21, 1.8.22, 1.8.22, 1.8.23, 1.8.23, 1.8.24, 1.8.24, 1.8.25, 1.8.25, 1.8.26, 1.8.26, 1.8.27, 1.8.27, 1.8.28, 1.8.28, 1.8.29, 1.8.29, 1.8.30, 1.8.30, 1.8.31, 1.8.31, 1.8.32, 1.8.32, 1.8.33, 1.8.33, 1.8.34, 1.8.34, 1.8.35, 1.8.35, 1.8.36, 1.8.36, 1.8.37, 1.8.37, 1.8.38, 1.8.38, 1.8.39, 1.8.39, 1.8.40, 1.8.40, 1.8.41, 1.8.41, 1.8.42, 1.8.42, 1.8.43, 1.8.43, 1.8.44, 1.8.44, 1.8.45, 1.8.45, 1.8.46, 1.8.46, 1.8.47, 1.8.47, 1.8.48, 1.8.48, 1.8.49, 1.8.49, 1.8.50, 1.8.50, 1.9.0, 1.9.0, 1.9.1, 1.9.1, 1.9.2, 1.9.2, 1.9.3, 1.9.3, 1.9.4, 1.9.4, 1.9.5, 1.9.5, 1.9.6, 1.9.6, 1.9.7, 1.9.7, 1.9.8, 1.9.8, 1.9.9, 1.9.9, 1.9.10, 1.9.10, 1.9.11, 1.9.11, 1.9.12, 1.9.12, 1.9.13, 1.9.13, 1.9.14, 1.9.14, 1.9.15, 1.9.15, 1.9.16, 1.9.16, 1.9.17, 1.9.17, 1.9.18, 1.9.18, 1.9.19, 1.9.19, 1.9.20, 1.9.20, 1.9.21, 1.9.21, 1.9.22, 1.9.22, 1.9.23, 1.9.23, 1.10.0, 1.10.0, 1.10.1, 1.10.1, 1.10.2, 1.10.2, 1.10.3, 1.10.3, 1.10.4, 1.10.4, 1.10.5, 1.10.5, 1.10.6, 1.10.6, 1.10.7, 1.10.7, 1.10.8, 1.10.8, 1.10.9, 1.10.9, 1.10.10, 1.10.10, 1.10.11, 1.10.11, 1.10.12, 1.10.12, 1.10.13, 1.10.13, 1.10.14, 1.10.14, 1.10.15, 1.10.15, 1.10.16, 1.10.16, 1.10.17, 1.10.17, 1.10.18, 1.10.18, 1.10.19, 1.10.19, 1.10.20, 1.10.20, 1.10.21, 1.10.21, 1.10.22, 1.10.22, 1.10.23, 1.10.23, 1.10.24, 1.10.24, 1.10.25, 1.10.25, 1.10.26, 1.10.26, 1.10.27, 1.10.27, 1.10.28, 1.10.28, 1.10.29, 1.10.29, 1.10.30, 1.10.30, 1.10.31, 1.10.31, 1.10.32, 1.10.32, 1.10.33, 1.10.33, 1.10.34, 1.10.34, 1.10.35, 1.10.35, 1.10.36, 1.10.36, 1.10.37, 1.10.37, 1.10.38, 1.10.38, 1.10.39, 1.10.39, 1.10.40, 1.10.40, 1.10.41, 1.10.41, 1.10.42, 1.10.42, 1.10.43, 1.10.43, 1.10.44, 1.10.44, 1.10.45, 1.10.45, 1.10.46, 1.10.46, 1.10.47, 1.10.47, 1.10.48, 1.10.48, 1.10.49, 1.10.49, 1.10.50, 1.10.50, 1.10.51, 1.10.51, 1.10.52, 1.10.52, 1.10.53, 1.10.53, 1.10.54, 1.10.54, 1.10.55, 1.10.55, 1.10.56, 1.10.56, 1.10.57, 1.10.57, 1.10.58, 1.10.58, 1.10.59, 1.10.59, 1.10.60, 1.10.60, 1.10.61, 1.10.61, 1.10.62, 1.10.62, 1.10.63, 1.10.63, 1.10.64, 1.10.64, 1.10.65, 1.10.65, 1.10.66, 1.10.66, 1.10.67, 1.10.67, 1.10.68, 1.10.68, 1.10.69, 1.10.69, 1.10.70, 1.10.70, 1.10.71, 1.10.71, 1.10.72, 1.10.72, 1.10.73, 1.10.73, 1.10.74, 1.10.74, 1.10.75, 1.10.75, 1.10.76, 1.10.76, 1.10.77, 1.10.77, 1.10.78, 1.10.78, 1.10.79, 1.10.79, 1.10.80, 1.10.80, 1.10.81, 1.10.81, 1.10.82, 1.10.82, 1.10.83, 1.10.83, 1.10.84, 1.10.84, 1.11.0, 1.11.0, 1.11.1, 1.11.1, 1.11.2, 1.11.2, 1.11.3, 1.11.3, 1.11.4, 1.11.4, 1.11.5, 1.11.5, 1.11.6, 1.11.6, 1.11.7, 1.11.7, 1.11.8, 1.11.8, 1.11.9, 1.11.9, 1.12.0, 1.12.0, 1.12.1, 1.12.1, 1.12.2, 1.12.2, 1.12.3, 1.12.3, 1.12.4, 1.12.4, 1.12.5, 1.12.5
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.

Steps to replicate

pipenv install --skip-lock 'boto3<1.8' 'credstash==1.14'
pipenv lock -v

$ pipenv --support

Pipenv version: '2018.7.1'

Pipenv location: '/usr/local/lib/python3.7/site-packages/pipenv'

Python location: '/usr/local/bin/python'

Other Python installations in PATH:

• 2.7: /usr/bin/python2.7

• 2.7: /usr/bin/python2.7

• 3.5: /usr/bin/python3.5m

• 3.5: /usr/bin/python3.5

• 3.7: /usr/local/bin/python3.7m

• 3.7: /usr/local/bin/python3.7

• 3.7: /usr/local/bin/python3.7

• 3.7.0: /usr/local/bin/python

• 3.7.0: /usr/local/bin/python

• 2.7.13: /usr/bin/python

• 2.7.13: /usr/bin/python2

• 3.7.0: /usr/local/bin/python3

• 3.7.0: /usr/local/bin/python3

• 3.5.3: /usr/bin/python3

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.7.0',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '3.10.0-862.2.3.el7.x86_64',
 'platform_system': 'Linux',
 'platform_version': '#1 SMP Wed May 9 18:05:47 UTC 2018',
 'python_full_version': '3.7.0',
 'python_version': '3.7',
 'sys_platform': 'linux'}

System environment variables:

• LANG
• HOSTNAME
• GPG_KEY
• PWD
• HOME
• TERM
• PYTHON_VERSION
• SHLVL
• PATH
• PYTHON_PIP_VERSION
• _
• PYTHONDONTWRITEBYTECODE
• PIP_PYTHON_PATH

Pipenv–specific environment variables:

Debug–specific environment variables:

• PATH: /usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
• LANG: C.UTF-8
• PWD: /opt/py

---

Contents of Pipfile ('/opt/py/Pipfile'):

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]
"boto3" = "<1.8"
credstash = "==1.14"

[dev-packages]

[requires]
python_version = "3.7"

[frostming]

Yet another resolution issue.

I know the core maintainers are working on replacing the resolution module. What about putting a section of 'Known issues' somewhere in README to avoid such kind of issues.

/cc @techalchemy @uranusjr

[petergaultney]

I seem to be having similar issues with botocore this evening, all of a sudden.

I anticipated doing further investigation tomorrow morning.

Are there known workarounds?

[uranusjr]

@frostming I highly doubt it would help at all, based on my past experience manging other projects :p If people open issues without investigating or reading others, it is extremely highly unlikely they would read the README.

@petergaultney The workaround is likely to pin boto to a lower version in Pipfile.

[grahamlyons]

@uranusjr, if this is a known issue then a section in the README would be really useful. I looked through a number of similar issues before I raised this one so if there's more information then I would really have appreciated that.

This is an attempted workaround, pinning to a lower version, and it doesn't work.

[uranusjr]

Well I guess a PR about this wouldn’t hurt :) I just don’t want to spend time writing it.

(I know that if I did, and someone posts an issue without reading, I will get extremely frustrated and start cursing at people. That is unhealthy to both myself and the project.)

[petergaultney]

Thanks.

Just a suggestion - a URL pointing to the appropriate sections of the documentation, printed along with the error output, could go a long way here. I've spent hours reading pipenv docs over the past couple months, but the truth is it's not always easy to find the relevant details.

[grahamlyons]

@uranusjr, I'd be happy to open a pull request for the README. My understanding of the issue is that pipenv can't always resolve the dependencies satisfactorily, even when a set exists to satisfy the constraints; is that correct?