graphviz package does not configure plugins

[Thomi Richards]

After installing graphviz 2.36.0-0ubuntu1 in Trusty, I can no longer generate any PNG images with the 'dot' tool. The reason for this is that the package scripts do not configure the installed graphviz plugins:

To reproduce:
----

$ dot -Tpng my_file.dot > my_file.png
There is no layout engine support for "dot"
Perhaps "dot -c" needs to be run (with installer's privileges) to register the plugins?

$ sudo dot -c
[sudo] password for thomi:

$ dot -Tpng my_file.dot > my_file.png
# works now.

I think the 'sudo dot -c' step ought to be done as part of the package installation scripts.

[Martin Pitt (pitti)]

For me it fails in a different way:
$ dot -Tpng ./Dokumente/computer/talks/efficient-bug-handling/bug-lifecycle.dot > /tmp/bug.png
Format: "png" not recognized. Use one of:

(sic - I didn't forget to copy&paste anything, it's really looking like that). Confirming that "dot -c" fixes that, this should indeed go into the postinst. I'll ask Matthias to confirm, and then upload that.

[Launchpad Janitor (janitor)]

This bug was fixed in the package graphviz - 2.36.0-0ubuntu2

---------------
graphviz (2.36.0-0ubuntu2) trusty; urgency=medium

  * debian/*.post{inst,rm}: Update for libgvc5-config-update →
    libgvc6-config-update to correctly configure plugins. (LP: #1270025)
  * Add a simple autopkgtest that ensures that "dot" works.
 -- Martin Pitt <email address hidden> Fri, 17 Jan 2014 07:55:19 +0100

[grobbelaar (grobbelaar)]

Does not seem to work with current 14.04 LTS:

$ cat /etc/issue
Ubuntu 14.04 LTS \n \l
$ dot -Tpng
Format: "png" not recognized. Use one of:
$ dot -V
dot - graphviz version 2.36.0 (20140111.2315)
$ aptitude show graphviz
Package: graphviz
State: installed
Automatically installed: no
Multi-Arch: foreign
Version: 2.36.0-0ubuntu3
(snipped)

[Ilya Murav'jov (muravjov-il)]

I confirm grobbelaar' results - the issue is not fixed:

$ dot -Tpng
Format: "png" not recognized. Use one of:

$ dot -V
dot - graphviz version 2.36.0 (20140111.2315)

$ dpkg --status graphviz
Package: graphviz
Status: install ok installed
Priority: optional
Section: graphics
Installed-Size: 1785
Maintainer: Ubuntu Developers <email address hidden>
Architecture: amd64
Multi-Arch: foreign
Version: 2.36.0-0ubuntu3

[Ilya Murav'jov (muravjov-il)]

Workaround: "sudo dot -c"

[Richard Hansen (rhansen)]

I filed a new bug report for this: bug #1349026