[Bug 1583897] Update Released

[Robie Basak]

The verification of the Stable Release Update for graphviz has completed
successfully and the package has now been released to -updates.
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the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
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https://bugs.launchpad.net/bugs/1583897

Title:
  libgv-python: wrong symlink from _gv.x86_64-linux-gnu.so

Status in graphviz package in Ubuntu:
  Fix Released
Status in graphviz source package in Xenial:
  Fix Released
Status in graphviz source package in Yakkety:
  Fix Committed
Status in graphviz package in Debian:
  Fix Released

Bug description:
  Impact
  ======
  libgv-python is unusable because the symlink is not pointed to the correct file. Ubuntu 16.04 LTS and 16.10 are affected by this bug, but Ubuntu 14.04 LTS is not.

  Test Case
  =========
  Install libgv-python
  Run these commands:
  $ python
  >>> import gv

  It should silently print a new line without errors
  >>>

  Then, type exit() to exit the python interpreter

  Regression Potential
  ====================
  None. Without this fix, libgv-python doesn't work at all.
  The fix in debian/rules is copied from Debian 2.38.0-16.

  Original Bug Report
  ===================

  On xenial, with the latest version of libgv-python (2.38.0-12ubuntu2)
  on x86_64,

  when importing the gv module I get the following error:

  ```
  ❯ python
  Python 2.7.11+ (default, Apr 17 2016, 14:00:29)
  [GCC 5.3.1 20160413] on linux2
  Type "help", "copyright", "credits" or "license" for more information.
  >>> import gv
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "gv.py", line 28, in <module>
      _gv = swig_import_helper()
    File "gv.py", line 20, in swig_import_helper
      import _gv
  ImportError: No module named _gv
  >>>
  ```

  Upon investigation, there is a dangling symlink -- _gv.x86_64-linux-
  gnu.so points to a non-existent library that does not contain the
  architecture, whereas the actual existing file is tagged with the
  architecture (x86_64-linus-gnu):

  ```
  /usr/lib/python2.7/dist-packages
  ❯ ls -l *gv*so
  lrwxrwxrwx 1 root root    17 Mar 14 05:29 _gv.x86_64-linux-gnu.so -> libgv_python27.so
  -rw-r--r-- 1 root root 92624 Mar 14 05:29 libgv_python27.x86_64-linux-gnu.so

  ```

  Currently creating the libgv_python27.so -> libgv_python27.x86_64
  -linux-gnu.so symlink manually so as not to touch the files coming
  from the package.

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