Hi, there,
I met the following error when I install sage from ppa. My system is
Ubuntu 14.04 LTS 64bit.
I need your help. Thanks very much.
Best
Huayi
```
:~$ sudo apt-get install sagemath-upstream-binary
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
sagemath-upstream-binary
0 upgraded, 1 newly installed, 0 to remove and 10 not upgraded.
Need to get 270 MB of archives.
After this operation, 2,055 MB of additional disk space will be used.
Get:1 http://ppa.launchpad.net/aims/sagemath/ubuntu/ trusty/main
sagemath-upstream-binary amd64 6.7ppa8revert6.6 [270 MB]
Fetched 270 MB in 8min 44s (514 kB/s)
Selecting previously unselected package sagemath-upstream-binary.
(Reading database ... 819671 files and directories currently installed.)
Preparing to unpack
.../sagemath-upstream-binary_6.7ppa8revert6.6_amd64.deb ...
Unpacking sagemath-upstream-binary (6.7ppa8revert6.6) ...
Processing triggers for mime-support (3.54ubuntu1.1) ...
Processing triggers for gnome-menus (3.10.1-0ubuntu2) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu1) ...
Processing triggers for bamfdaemon (0.5.1+14.04.20140409-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Setting up sagemath-upstream-binary (6.7ppa8revert6.6) ...
Running Sage once as root to set paths
┌────────────────────────────────────────────────────────────────────┐
│ SageMath Version 6.6, Release Date: 2015-04-14 │
│ Type "notebook()" for the browser-based notebook interface. │
│ Type "help()" for help. │
└────────────────────────────────────────────────────────────────────┘
The Sage installation tree has moved
from /home/buildbot/build/sage/snapperkob/sage_git/build
to /usr/lib/sagemath
Updating various hardcoded paths...
(Please wait at most a few minutes.)
DO NOT INTERRUPT THIS.
Done updating paths.
Traceback (most recent call last):
File "/usr/lib/sagemath/src/bin/sage-ipython", line 7, in <module>
from sage.repl.interpreter import SageTerminalApp
File
"/usr/lib/sagemath/local/lib/python2.7/site-packages/sage/__init__.py",
line 3, in <module>
from sage.repl.ipython_extension import load_ipython_extension
File
"/usr/lib/sagemath/local/lib/python2.7/site-packages/sage/repl/ipython_extension.py",
line 59, in <module>
from IPython.core.magic import Magics, magics_class, line_magic
File
"/usr/lib/sagemath/local/lib/python2.7/site-packages/IPython/__init__.py",
line 45, in <module>
from .config.loader import Config
File
"/usr/lib/sagemath/local/lib/python2.7/site-packages/IPython/config/__init__.py",
line 6, in <module>
from .application import *
File
"/usr/lib/sagemath/local/lib/python2.7/site-packages/IPython/config/application.py",
line 9, in <module>
import json
File "/usr/lib/sagemath/local/lib/python/json/__init__.py", line 108,
in <module>
from .decoder import JSONDecoder
File "/usr/lib/sagemath/local/lib/python/json/decoder.py", line 5, in
<module>
import struct
File "/usr/lib/sagemath/local/lib/python/struct.py", line 1, in <module>
from _struct import *
ImportError: No module named _struct
dpkg: error processing package sagemath-upstream-binary (--configure):
subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
sagemath-upstream-binary
E: Sub-process /usr/bin/dpkg returned an error code (1)
```
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