Enthought在Fedora上不工作。给出与未找到Zlib相关的错误

Question

我从.sh文件安装了canopy，该文件是从provided站点的链接提供的，然后在cd之后将以下命令运行到canopy目录中。

Ashish@LoneWarrior Canopy]$ ./canopy
Subprocess output:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64    /lib/python2.7/site-packages/pyface/gui.py", line 20, in <module>
from .toolkit import toolkit_object
  File "/home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64/lib/python2.7/site-packages/pyface/toolkit.py", line 99, in <module>
_init_toolkit()
  File "/home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64/lib/python2.7/site-packages/pyface/toolkit.py", line 65, in _init_toolkit
    be = import_toolkit(ETSConfig.toolkit)
  File "/home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64/lib/python2.7/site-packages/pyface/toolkit.py", line 58, in import_toolkit
    __import__(be + 'init')
  File "/home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64/lib/python2.7/site-packages/pyface/ui/qt4/init.py", line 18, in <module>
from pyface.qt import QtCore, QtGui, qt_api
  File "/home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64/lib/python2.7/site-packages/pyface/qt/QtGui.py", line 8, in <module>
from PySide.QtGui import *

这是主要错误:找不到ZLIB_1.2.9。

ImportError: /home/Ashish/Canopy/appdata/canopy-2.1.3.3542.rh6-x86_64/bin/../lib/libz.so.1: version `ZLIB_1.2.9' not found (required by /lib64/libpng16.so.16)

我已经尝试将python的默认值改为3，但仍然不起作用。

Answer 1

我认为问题出在基于Arch的发行版上。在这种情况下，临时解决方案是将libpng降级到1.6.28 (这在我的情况下有效)。如果你的缓存中没有它(`/var/ cache /pacman/pkg')，你可以从https://archive.archlinux.org/packages/l/libpng/下载

然后，在包含下载文件的目录中运行以下https://wiki.archlinux.org/index.php/downgrading_packages

# pacman -U libpng-1.6.28-1-x86_64.pkg.tar.xz

(当然，使用正确的体系结构)

不要忘记将/etc/pacman.conf中的libpng列在被忽略的包中，以防止升级。查找[options]部分并添加IgnorePkg = libpng。

重要的。请记住，降级包并不是无害的，因此，这只是一个暂时的解决方案。

Answer 2

问题是canopy环境中的libz文件与系统中安装的ZLIB不兼容。快速修复:只需将libz.so.1文件从lib目录复制到您的canopy环境。在我的例子中是

$ cp /usr/lib/libz.so.1 path-to-Canopy-install-directory/appdata/canopy-2.1.6.3665.rh6-x86_64/lib/libz.so.1