kennknowles opened a new issue, #19106:
URL: https://github.com/apache/beam/issues/19106

   I am trying to create a python beam project which used google cloud pubsub. 
When i try to install the packages as below, it fails to resolve the 
dependencies with the error:
   
   `*Could not find a version that matches 
google-cloud-pubsub==0.26.0,==0.37.2* `
   
   `$ pipenv --two``Using /usr/local/bin/python2 (2.7.15) to create 
virtualenv...``$ pipenv install apache-beam[gcp] 
google-cloud-pubsub``Collecting apache-beam[gcp]`
   ` Using cached 
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   `Collecting crcmod<2.0,>=1.7 (from apache-beam[gcp])`
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   `Collecting dill<=0.2.8.2,>=0.2.6 (from apache-beam[gcp])`
   `Collecting future<1.0.0,>=0.16.0 (from apache-beam[gcp])`
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   `Collecting httplib2<=0.11.3,>=0.8 (from apache-beam[gcp])`
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   `Collecting pytz<=2018.4,>=2018.3 (from apache-beam[gcp])`
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   `Collecting pyyaml<4.0.0,>=3.12 (from apache-beam[gcp])`
   `Collecting pydot<1.3,>=1.2.0 (from apache-beam[gcp])`
   `Collecting google-apitools<=0.5.20,>=0.5.18; extra == "gcp" (from 
apache-beam[gcp])`
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   `Collecting proto-google-cloud-pubsub-v1==0.15.4; extra == "gcp" (from 
apache-beam[gcp])`
   `Collecting google-cloud-bigquery==0.25.0; extra == "gcp" (from 
apache-beam[gcp])`
   ` Using cached 
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   `Collecting google-cloud-pubsub==0.26.0; extra == "gcp" (from 
apache-beam[gcp])`
   ` Using cached 
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   `Collecting googledatastore==7.0.1; extra == "gcp" (from apache-beam[gcp])`
   `Collecting proto-google-cloud-datastore-v1<=0.90.4,>=0.90.0; extra == "gcp" 
(from apache-beam[gcp])`
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   `Collecting docopt (from hdfs<3.0.0,>=2.1.0->apache-beam[gcp])`
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   `Requirement already satisfied: setuptools in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from pyvcf<0.7.0,>=0.6.8->apache-beam[gcp]) (40.2.0)`
   `Collecting enum34>=1.0.4 (from grpcio<2,>=1.8->apache-beam[gcp])`
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   `Collecting googleapis-common-protos<2.0dev,>=1.5.2 (from 
proto-google-cloud-pubsub-v1==0.15.4; extra == "gcp"->apache-beam[gcp])`
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"gcp"->apache-beam[gcp])`
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gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub==0.26.0; 
extra == "gcp"->apache-beam[gcp])`
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 extra == "gcp"->apache-beam[gcp])`
   `Installing collected packages: pbr, funcsigs, six, mock, crcmod, avro, 
dill, future, docopt, certifi, chardet, urllib3, idna, requests, hdfs, pyvcf, 
enum34, futures, grpcio, httplib2, typing, pyasn1, pyasn1-modules, rsa, 
oauth2client, pytz, protobuf, pyyaml, pyparsing, pydot, monotonic, fasteners, 
google-apitools, googleapis-common-protos, proto-google-cloud-pubsub-v1, 
cachetools, google-auth, google-auth-httplib2, google-cloud-core, 
google-cloud-bigquery, ply, google-gax, grpc-google-iam-v1, 
gapic-google-cloud-pubsub-v1, google-cloud-pubsub, 
proto-google-cloud-datastore-v1, googledatastore, apache-beam`
   `Successfully installed apache-beam-2.6.0 avro-1.8.2 cachetools-2.1.0 
certifi-2018.8.24 chardet-3.0.4 crcmod-1.7 dill-0.2.8.2 docopt-0.6.2 
enum34-1.1.6 fasteners-0.14.1 funcsigs-1.0.2 future-0.16.0 futures-3.2.0 
gapic-google-cloud-pubsub-v1-0.15.4 google-apitools-0.5.20 google-auth-1.5.1 
google-auth-httplib2-0.0.3 google-cloud-bigquery-0.25.0 
google-cloud-core-0.25.0 google-cloud-pubsub-0.26.0 google-gax-0.15.16 
googleapis-common-protos-1.5.3 googledatastore-7.0.1 grpc-google-iam-v1-0.11.4 
grpcio-1.14.2 hdfs-2.1.0 httplib2-0.11.3 idna-2.7 mock-2.0.0 monotonic-1.5 
oauth2client-4.1.3 pbr-4.2.0 ply-3.8 proto-google-cloud-datastore-v1-0.90.4 
proto-google-cloud-pubsub-v1-0.15.4 protobuf-3.6.1 pyasn1-0.4.4 
pyasn1-modules-0.2.2 pydot-1.2.4 pyparsing-2.2.0 pytz-2018.4 pyvcf-0.6.8 
pyyaml-3.13 requests-2.19.1 rsa-3.4.2 six-1.11.0 typing-3.6.6 
urllib3-1.23``Adding apache-beam[gcp] to Pipfile's [packages]...`
   `Installing google-cloud-pubsub...`
   `Requirement already satisfied: google-cloud-pubsub in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (0.26.0)`
   `Requirement already satisfied: grpcio<2.0dev,>=1.0.2 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from google-cloud-pubsub) (1.14.2)`
   `Requirement already satisfied: 
gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from google-cloud-pubsub) (0.15.4)`
   `Requirement already satisfied: google-cloud-core<0.26dev,>=0.25.0 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from google-cloud-pubsub) (0.25.0)`
   `Requirement already satisfied: six>=1.5.2 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from grpcio<2.0dev,>=1.0.2->google-cloud-pubsub) (1.11.0)`
   `Requirement already satisfied: enum34>=1.0.4 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from grpcio<2.0dev,>=1.0.2->google-cloud-pubsub) (1.1.6)`
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(0.15.4)`
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(1.5.3)`
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(0.15.16)`
   `Collecting oauth2client<4.0dev,>=2.0.0 (from 
gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)`
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(0.11.4)`
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 (from google-cloud-core<0.26dev,>=0.25.0->google-cloud-pubsub) (1.5.1)`
   `Requirement already satisfied: requests<3.0dev,>=2.13.0 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (2.19.1)`
   `Requirement already satisfied: ply==3.8 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (3.8)`
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/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (0.2.8.2)`
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 (from 
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 (0.16.0)`
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/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
oauth2client<4.0dev,>=2.0.0->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (0.4.4)`
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 (from 
oauth2client<4.0dev,>=2.0.0->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (0.2.2)`
   `Requirement already satisfied: rsa>=3.1.4 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
oauth2client<4.0dev,>=2.0.0->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (3.4.2)`
   `Requirement already satisfied: setuptools in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
protobuf>=3.0.0->google-cloud-core<0.26dev,>=0.25.0->google-cloud-pubsub) 
(40.2.0)`
   `Requirement already satisfied: cachetools>=2.0.0 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
google-auth<2.0.0dev,>=0.4.0->google-cloud-core<0.26dev,>=0.25.0->google-cloud-pubsub)
 (2.1.0)`
   `Requirement already satisfied: certifi>=2017.4.17 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
requests<3.0dev,>=2.13.0->google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (2018.8.24)`
   `Requirement already satisfied: chardet<3.1.0,>=3.0.2 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
requests<3.0dev,>=2.13.0->google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (3.0.4)`
   `Requirement already satisfied: urllib3<1.24,>=1.21.1 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
requests<3.0dev,>=2.13.0->google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (1.23)`
   `Requirement already satisfied: idna<2.8,>=2.5 in 
/Users/amardeep/.local/share/virtualenvs/gpy-QeSgj5Yn/lib/python2.7/site-packages
 (from 
requests<3.0dev,>=2.13.0->google-gax<0.16dev,>=0.15.7->gapic-google-cloud-pubsub-v1<0.16dev,>=0.15.0->google-cloud-pubsub)
 (2.7)`
   `Installing collected packages: oauth2client`
   ` Found existing installation: oauth2client 4.1.3`
   ` Uninstalling oauth2client-4.1.3:`
   ` Successfully uninstalled oauth2client-4.1.3`
   `Successfully installed oauth2client-3.0.0``Adding google-cloud-pubsub to 
Pipfile's [packages]...`
   `Pipfile.lock not found, creating...`
   `Locking [dev-packages] dependencies...`
   `Locking [packages] 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 google-cloud-pubsub==0.26.0,==0.37.2 
(from -r 
/var/folders/m2/ft5jrsmx32bfr89__dslh06h0000gn/T/pipenv-cfVDOG-requirements/pipenv-_pPvhV-constraints.txt
 (line 3))`
   `Tried: 0.20.0, 0.20.0, 0.21.0, 0.21.0, 0.22.0, 0.22.0, 0.23.0, 0.23.0, 
0.24.0, 0.24.0, 0.25.0, 0.25.0, 0.26.0, 0.26.0, 0.27.0, 0.27.0, 0.28.0, 0.28.0, 
0.28.1, 0.28.1, 0.28.2, 0.28.2, 0.28.3, 0.28.3, 0.28.4, 0.28.4, 0.29.0, 0.29.0, 
0.29.1, 0.29.1, 0.29.2, 0.29.2, 0.29.3, 0.29.3, 0.29.4, 0.29.4, 0.30.0, 0.30.0, 
0.30.1, 0.30.1, 0.31.0, 0.31.0, 0.32.0, 0.32.0, 0.32.1, 0.32.1, 0.33.0, 0.33.0, 
0.33.1, 0.33.1, 0.34.0, 0.34.0, 0.35.0, 0.35.0, 0.35.1, 0.35.1, 0.35.2, 0.35.2, 
0.35.3, 0.35.3, 0.35.4, 0.35.4, 0.36.0, 0.36.0, 0.37.0, 0.37.0, 0.37.1, 0.37.1, 
0.37.2, 0.37.2`
   `There are incompatible versions in the resolved dependencies.`
   
   Imported from Jira 
[BEAM-5353](https://issues.apache.org/jira/browse/BEAM-5353). Original Jira may 
contain additional context.
   Reported by: amardeeps.


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