[Bug 1398028] Re: libgraphviz-dev: dangling symbolic links for missing files libgvplugin_gdk.so and libgvplugin_gtk.so

[J G Miller]

Since reporting this bug TWO YEARS ago (2014-12-01), my system has moved
on to

DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"

With the current package versions installed for Ubuntu 16.04 Xenial

graphviz           2.38.0-12ubuntu2
graphviz-doc       2.38.0-12ubuntu2
libgraphviz-dev    2.38.0-12ubuntu2

there are, in /usr/lib/graphviz, the two dangling symbolic links

lrwxrwxrwx   1 root root     24 2016-03-13 23:30 libgvplugin_gdk.so -> libgvplugin_gdk.so.6.0.0
lrwxrwxrwx   1 root root     24 2016-03-13 23:30 libgvplugin_gtk.so -> libgvplugin_gtk.so.6.0.0

After downloading all of the required "proposed" new packages and

Setting up libcdt5 (2.38.0-12ubuntu2.1) ...
Setting up libcgraph6 (2.38.0-12ubuntu2.1) ...
Setting up libgvpr2 (2.38.0-12ubuntu2.1) ...
Setting up libpathplan4 (2.38.0-12ubuntu2.1) ...
Setting up libxdot4 (2.38.0-12ubuntu2.1) ...
Setting up libgvc6 (2.38.0-12ubuntu2.1) ...
Setting up graphviz (2.38.0-12ubuntu2.1) ...
Setting up libgvc6-plugins-gtk (2.38.0-12ubuntu2.1) ...
Setting up libgraphviz-dev (2.38.0-12ubuntu2.1) ...

the symbolic links no longer dangle because the gdk and gtk plugin
shared library files are present.

lrwxrwxrwx   1 root root     24 2017-01-05 22:17 libgvplugin_gdk.so -> libgvplugin_gdk.so.6.0.0
lrwxrwxrwx   1 root root     24 2017-01-05 22:17 libgvplugin_gdk.so.6 -> libgvplugin_gdk.so.6.0.0
-rw-r--r--   1 root root  10100 2017-01-05 22:17 libgvplugin_gdk.so.6.0.0
lrwxrwxrwx   1 root root     24 2017-01-05 22:17 libgvplugin_gtk.so -> libgvplugin_gtk.so.6.0.0
lrwxrwxrwx   1 root root     24 2017-01-05 22:17 libgvplugin_gtk.so.6 -> libgvplugin_gtk.so.6.0.0
-rw-r--r--   1 root root  30636 2017-01-05 22:17 libgvplugin_gtk.so.6.0.0

Thank you for finally fixing this problem and thank you to Jeremy for
all his work in maintaining and packaging this and other packages.

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https://bugs.launchpad.net/bugs/1398028

Title:
  libgraphviz-dev: dangling symbolic links for missing files
  libgvplugin_gdk.so and libgvplugin_gtk.so

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

Bug description:
  Impact
  ======
  libgraphviz-dev has dangling symlinks.

  Test Case
  =========
  Verify that libgraphviz-dev depends on libgvc6-plugin-gtk and that
  libgvplugin_gdk.so.6.0.0 and libgvplugin_gtk.so.6.0.0 exist in libgvc6-plugin-gtk.

  Regression Potential
  ====================
  None. This simply installs one file that had been built but not installed (the GDK plugin) and adds a missing dependency from libgraphviz-dev to the graphviz GTK plugin library built in the same package.

  Other Info
  ==========
  These bugs were fixed in Debian's graphviz 2.38.0-13 and -14 and fixed in yakkety.

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

  PRETTY_NAME="Ubuntu 14.04.1 LTS"
  VERSION="14.04.1 LTS, Trusty Tahr"

  Package: libgraphviz-dev
  Architecture: i386
  Source: graphviz
  Version: 2.36.0-0ubuntu3

  In /usr/lib/graphviz, dangling symbolic links to non-existing files
  are created.

  0 lrwxrwxrwx 1 root root  24    2014-02-20 14:11   libgvplugin_gdk.so -> libgvplugin_gdk.so.6.0.0
  0 lrwxrwxrwx 1 root root  24    2014-02-20 14:11   libgvplugin_gtk.so -> libgvplugin_gtk.so.6.0.0

  No package contains either  libgvplugin_gdk.so.6.0.0  or
  libgvplugin_gtk.so.6.0.0: neither graphviz i386 architecture package
  nor amd64 architecture package.

  Perhaps these symbolic links are an unintended remnant from the
  libgraphviz to graphviz transition.

  If not, then libgvplugin_gdk.so.6.0.0 and libgvplugin_gtk.so.6.0.0
  should be provided in the graphviz package.

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