"ImportError: cannot import name flat" when checking import of Nevow 0.11.1 on OpenSUSE 13.2

[daira]

renat wrote on tahoe-dev:

Hello. Compiled [successfully]. But can't run:

tahoe@linux:~/allmydata-tahoe-1.10.2/bin> python --version
Python 2.7.8

tahoe@linux:~/allmydata-tahoe-1.10.2/bin> ./tahoe
Traceback (most recent call last):
  File "/home/tahoe/allmydata-tahoe-1.10.2/support/bin/tahoe", line 9, in <module>
    load_entry_point('allmydata-tahoe==1.10.2', 'console_scripts', 'tahoe')()
  File "/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/setuptools-0.6c16dev6.egg/pkg_resources.py", line 320, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/setuptools-0.6c16dev6.egg/pkg_resources.py", line 2265, in load_entry_point
    return ep.load()
  File "/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/setuptools-0.6c16dev6.egg/pkg_resources.py", line 1998, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/home/tahoe/allmydata-tahoe-1.10.2/src/allmydata/__init__.py", line 431, in <module>
    check_all_requirements()
  File "/home/tahoe/allmydata-tahoe-1.10.2/src/allmydata/__init__.py", line 429, in check_all_requirements
    raise PackagingError(get_error_string(fatal_errors + _cross_check_errors, debug=True))
allmydata.PackagingError:
ImportError: for requirement 'Nevow >= 0.11.1': (<type 'exceptions.ImportError'>, 'cannot import name flat', ('/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/Nevow-0.11.1-py2.7.egg/nevow/__init__.py', 17, '<module>', 'from nevow import flat'))
Warning: dependency 'nevow' could not be imported. pkg_resources thought it should be possible to import version '0.11.1' from '/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/Nevow-0.11.1-py2.7.egg'.
The exception trace was (<type 'exceptions.ImportError'>, 'cannot import name flat', ('/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/Nevow-0.11.1-py2.7.egg/nevow/__init__.py', 17, '<module>', 'from nevow import flat')).

For debugging purposes, the PYTHONPATH was
'/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages'
install_requires was
  ['setuptools >= 0.6c6', 'zfec >= 1.1.0', 'simplejson >= 1.4', 'zope.interface >= 3.6.0, != 3.6.3, != 3.6.4', 'foolscap >= 0.8.0', 'pycrypto >= 2.1.0, != 2.2, != 2.4', 'pycryptopp >= 0.6.0', 'service-identity', 'characteristic >= 14.0.0', 'pyasn1 >= 0.1.8', 'pyasn1-modules >= 0.0.5', 'Twisted >= 13.0.0', 'Nevow >= 0.11.1', 'pyOpenSSL >= 0.13, <= 0.13.1']
sys.path after importing pkg_resources was
  /home/tahoe/allmydata-tahoe-1.10.2/support/bin:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/setuptools-0.6c16dev6.egg:
  /home/tahoe/allmydata-tahoe-1.10.2/src:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/pyOpenSSL-0.13.1-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/Nevow-0.11.1-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/Twisted-15.4.0-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/pyasn1_modules-0.0.8-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/pyasn1-0.1.9-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/characteristic-14.3.0-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/service_identity-14.0.0-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/pycryptopp-0.6.0.1206569328141510525648634803928199668821045408958-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/pycrypto-2.6.1-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/foolscap-0.9.1-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/zope.interface-4.1.3-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/simplejson-3.8.0-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/zfec-1.4.24-py2.7-linux-x86_64.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/pyutil-2.0.0-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages/zbase32-1.1.5-py2.7.egg:
/home/tahoe/allmydata-tahoe-1.10.2/support/lib/python2.7/site-packages:
  /usr/lib/python27.zip:
  /usr/lib64/python2.7:
  /usr/lib64/python2.7/plat-linux2:
  /usr/lib64/python2.7/lib-tk:
  /usr/lib64/python2.7/lib-old:
  /usr/lib64/python2.7/lib-dynload:
  /usr/lib64/python2.7/site-packages:
  /usr/local/lib64/python2.7/site-packages:
  /usr/local/lib/python2.7/site-packages:
  /usr/lib/python2.7/site-packages

[exarkun]

Tahoe-LAFS is being ported away from Nevow.