Missing dependency on configure home server (synapse)

[iruthaya]

Description

I'm trying to configure my own matrix home server(synapse) on EC2 Amazon Linux AMI and it's have following packages

1. Python 2.7.12
2. pip 9.0.1 from /usr/lib/python2.7/dist-packages (python 2.7)
3. jsonschema==2.6.0
4. frozendict==1.2
5. unpaddedbase64==1.1.0
6. canonicaljson==1.0.0
7. signedjson==1.0.0
8. pymacaroons-pynacl==0.9.3
9. Twisted==17.9.0
10. pyOpenSSL==17.3.0
11. pyasn1==0.1.7
12.pyasn1-modules==0.1.4
13. bcrypt==3.1.3
14. msgpack-python==0.4.8
And some other packages are also installed in VM

Steps to reproduce

When i execute Configuring synapse cmd

python -m synapse.app.homeserver \
--server-name mydomainname \
--config-path homeserver.yaml \
--generate-config \
--report-stats=yes

I am constantly getting the following error

ERROR:root:Can't import 'msgpack' which is part of 'msgpack-python>=0.3.0'
Traceback (most recent call last):
  File "/home/ec2-user/.synapse/local/lib/python2.7/dist-packages/synapse/python_dependencies.py", line 107, in check_requirements
    module = __import__(module_name)
ImportError: No module named msgpack
Missing Requirement: Can't import 'msgpack' which is part of 'msgpack-python>=0.3.0'
To install run:
    pip install --upgrade --force "msgpack-python>=0.3.0"

Even after installing all the packages in my system.

I tried it by removing the entries one by one in python_dependencies.py But still I am getting error other than the one I have removed. My sense says that it could be some config / env setting.

Version information

• Version: 0.23.1
• Install method: package manager/git clone/pip
• Platform: EC2 Amazon Linux AMI.

[richvdh]

It seems odd that you would get this error if msgpack-python 0.4.8 is installed in your virtualenv.

Is it still a problem for you? If so, can you share the output of pip freeze, and also python -c 'import msgpack' ?

[iruthaya]

Thanks for @richvdh ur reply. we are implement some other server.