Error on installation

[pcoenen]

When installing appScale on Ubuntu 16, I always get the following error

Installing collected packages: pycapnp
  Running setup.py install for pycapnp ... error
    Complete output from command /usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-LI21Iu/pycapnp/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-Vtkv9S-record/install-record.txt --single-version-externally-managed --compile:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-LI21Iu/pycapnp/setup.py", line 92, in <module>
        from Cython.Distutils import build_ext as build_ext_c
    ImportError: No module named Cython.Distutils

    ----------------------------------------
Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-LI21Iu/pycapnp/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-Vtkv9S-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-LI21Iu/pycapnp/
You are using pip version 8.1.1, however version 10.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Failed to install pycapnp: retrying ...

[cdonati]

Hi @pcoenen,

That's the first time I've seen that issue. Would you mind sharing a few details about the environment you are installing AppScale on? Is this a virtual machine, container, or bare metal? What's your CPU architecture (lscpu)? Are you installing as the root user?

pycapnp should be installing whatever dependencies it needs before building, but you could try running pip install cython before running the AppScale build.

[obino]

Closing for no response in a long time: please re-open if needed.

[kerbymart]

@pcoenen @cdonati

pip install Cython==0.29.21

Then use an older version of pycapnp otherwise it will throw errors: #3232

git clone -b v0.6.4 https://github.com/capnproto/pycapnp.git

[kerbymart]

Hi @obino, I believe this issue should be reopened since 'bootstrap.sh' no longer builds Appscale.