I am unable to use portage, layman, pip, python-updater and other programs due to a python (?) error. The error seems to be linked to OpenSSL. Reproducible: Always Steps to Reproduce: 1. emerge --info Actual Results: Traceback (most recent call last): File "/usr/lib/python-exec/python2.7/emerge", line 44, in <module> from _emerge.main import emerge_main File "/usr/lib/python2.7/site-packages/_emerge/main.py", line 23, in <module> from portage.sync import _SUBMODULE_PATH_MAP File "/usr/lib/python2.7/site-packages/portage/sync/__init__.py", line 21, in <module> module_controller = Modules(path=path, namepath="portage.sync.modules") File "/usr/lib/python2.7/site-packages/portage/module.py", line 84, in __init__ self._modules = self._get_all_modules() File "/usr/lib/python2.7/site-packages/portage/module.py", line 109, in _get_all_modules new_module = Module(entry, self._namepath) File "/usr/lib/python2.7/site-packages/portage/module.py", line 30, in __init__ self.initialized = self._initialize() File "/usr/lib/python2.7/site-packages/portage/module.py", line 40, in _initialize self._module = __import__(mod_name, [], [], ["not empty"]) File "/usr/lib/python2.7/site-packages/portage/sync/modules/laymansync/__init__.py", line 14, in <module> import layman File "/usr/lib/python2.7/site-packages/layman/__init__.py", line 13, in <module> from layman.api import LaymanAPI File "/usr/lib/python2.7/site-packages/layman/api.py", line 25, in <module> from layman.remotedb import RemoteDB File "/usr/lib/python2.7/site-packages/layman/remotedb.py", line 46, in <module> from sslfetch.connections import Connector File "/usr/lib/python2.7/site-packages/sslfetch/connections.py", line 39, in <module> import requests File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 53, in <module> from .packages.urllib3.contrib import pyopenssl File "/usr/lib/python2.7/site-packages/requests/packages/urllib3/contrib/pyopenssl.py", line 53, in <module> import OpenSSL.SSL File "/usr/lib/python2.7/site-packages/OpenSSL/__init__.py", line 8, in <module> from OpenSSL import rand, crypto, SSL File "/usr/lib/python2.7/site-packages/OpenSSL/rand.py", line 11, in <module> from OpenSSL._util import ( File "/usr/lib/python2.7/site-packages/OpenSSL/_util.py", line 3, in <module> from cryptography.hazmat.bindings.openssl.binding import Binding File "/usr/lib/python2.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 60, in <module> class Binding(object): File "/usr/lib/python2.7/site-packages/cryptography/hazmat/bindings/openssl/binding.py", line 109, in Binding libraries=_get_libraries(sys.platform) File "/usr/lib/python2.7/site-packages/cryptography/hazmat/bindings/utils.py", line 97, in build_ffi_for_binding extra_link_args=extra_link_args, File "/usr/lib/python2.7/site-packages/cryptography/hazmat/bindings/utils.py", line 106, in build_ffi ffi.cdef(cdef_source) File "/usr/lib/python2.7/site-packages/cffi/api.py", line 106, in cdef self._parser.parse(csource, override=override, packed=packed) File "/usr/lib/python2.7/site-packages/cffi/cparser.py", line 165, in parse self._internal_parse(csource) File "/usr/lib/python2.7/site-packages/cffi/cparser.py", line 184, in _internal_parse self._parse_decl(decl) File "/usr/lib/python2.7/site-packages/cffi/cparser.py", line 256, in _parse_decl self._get_struct_union_enum_type('struct', node) File "/usr/lib/python2.7/site-packages/cffi/cparser.py", line 434, in _get_struct_union_enum_type return self._structnode2type[type] File "/usr/lib/python2.7/weakref.py", line 315, in __getitem__ return self.data[ref(key)] TypeError: cannot create weak reference to 'Struct' object
The error is knows and appears after the installation of pycparser-2.11. According to https://bugs.launchpad.net/openstack-gate/+bug/1446882 the solution is to downgrade pycparser to 2.10 version.
Maybe this is not the right place to ask a question, but it may help people in the same situation: How can I downgrade a package without emerge, ebuild or a similar tool?
as a quick fix just manually edit /usr/lib64/python2.7/site-packages/pycparser/c_ast.py to look like this (line numbers shown just for context): 22 class Node(object): 23 __slots__ = ('__weakref__',) 24 """ Abstract base class for AST nodes. this is basically commit https://github.com/markrwilliams/pycparser/commit/5298fd85018735462bdc037b47a62ce0fc5164d7 applied by hand.
It sounds like you have app-portage/layman[sync-plugin-portage] installed, and that is breaking portage installation due to this issue.
Thanks for the report, and sorry for the breakage. You may also be able to work around this by running emerge using python3. +*pycparser-2.12 (06 May 2015) + + 06 May 2015; Mike Gilbert <floppym@gentoo.org> +pycparser-2.12.ebuild, + -pycparser-2.11.ebuild: + Version bump, should fix bug 548718.
I had a pycparser-2.10.tbz2 lying around (long live binary packages) and just extracted that over /. I had to do something, you have no idea how broken my system was :/
I've reworked the laymansync plugin so that this type of problem would only affect an actual sync, not any other emerge operation. Also, this problem is only affecting py2.7. Layman running in py-3.3, 3.4 do not make use of this pkg.
*** Bug 549410 has been marked as a duplicate of this bug. ***
