1) All they were removed right after they did not help.
2) Removed several times with the whole mailman-bundler/ directory.
3) Did it all the time after pulling once.
4) I don't want to fix or work around, I can wait until we will understand what happening. I 'm going to run additional tests with another version of Centos tomorrow.
Answer:
[root@host ~]# cd [root@host ~]# virtualenv -p python3.4 xxx Running virtualenv with interpreter /usr/local/bin/python3.4 Using base prefix '/usr/local' New python executable in xxx/bin/python3.4 Also creating executable in xxx/bin/python Failed to import the site module Traceback (most recent call last): File "/root/xxx/lib/python3.4/site.py", line 67, in <module> import os File "/root/xxx/lib/python3.4/os.py", line 616, in <module> from _collections_abc import MutableMapping ImportError: No module named '_collections_abc' ERROR: The executable xxx/bin/python3.4 is not functioning ERROR: It thinks sys.prefix is '/root' (should be '/root/xxx') ERROR: virtualenv is not compatible with this system or executable [root@host ~]# ./xxx/bin/python Failed to import the site module Traceback (most recent call last): File "/root/xxx/lib/python3.4/site.py", line 67, in <module> import os File "/root/xxx/lib/python3.4/os.py", line 616, in <module> from _collections_abc import MutableMapping ImportError: No module named '_collections_abc'