armhf Bionic python3-pygraphviz package errors for simple use case

Can you try getting a no-change rebuild in a PPA?

Ok - I created a PPA and did a no-change rebuild (correctly to the best of my knowledge, this is my first time uploading to a PPA)

Build: https://launchpad.net/~emersonknapp/+archive/ubuntu/ppa/+build/17197601

If I use that build, the test file works now.

```
add-apt-repository ppa:emersonknapp/ppa
apt-get update
apt-get install -y python3-pygraphviz
python3 test.py
```

Seems pretty conclusive - what are the next steps?

diff -Nru python-pygraphviz-1.4~rc1/debian/changelog python-pygraphviz-1.4~rc1/debian/changelog
--- python-pygraphviz-1.4~rc1/debian/changelog 2017-08-05 02:38:34.000000000 -0700
+++ python-pygraphviz-1.4~rc1/debian/changelog 2019-06-27 17:08:25.000000000 -0700
@@ -1,3 +1,9 @@
+python-pygraphviz (1.4~rc1-1build3) bionic; urgency=medium
+
+ * No change rebuild (LP: #1834379)
+
+ -- Emerson Knapp (aubdsk) <email address hidden> Thu, 27 Jun 2019 17:08:25 -0700
+
 python-pygraphviz (1.4~rc1-1build2) artful; urgency=medium

   * No change rebuild to drop Python 3.5 support.

I've confirmed that this issue is only present in Bionic.

Hi Emerson

I'm looking to sponsor this upload. The version number in your change log conflicts with version 1.4~rc1-1build3 in Cosmic. I've looked at the security team's versioning guidelines [1], and this is an unusual case since Cosmic already has a no-change rebuild. I suggest using 1.4~rc1-1build2.1 for the Bionic upload.

Regards
Graham

[1] https://wiki.ubuntu.com/SecurityTeam/UpdatePreparation#Update_the_packaging

Uploaded as version 1.4~rc1-1build2.1.

Hello Emerson, or anyone else affected,

Accepted python-pygraphviz into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/python-pygraphviz/1.4~rc1-1build2.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Just finished taking this for a spin, both on armhf (to ensure it now works) and amd64 (to smoke test for no regressions).

Here is an up-to-date amd64 using 1.4~rc1-1build2:

$ cat << EOF >> test.py
> #!/usr/bin/env python3
>
> import pygraphviz
>
> graph = pygraphviz.AGraph()
> graph.add_node('foo')
> graph.add_node('bar')
> graph.add_edge('foo', 'bar')
> print('success!')
> EOF
$ chmod a+x test.py
$ ./test.py
success!

After installing 1.4~rc1-1build2.1 the results are unchanged-- it continues working:

$ sudo apt install python3-pygraphviz/bionic-proposed
<snip>
Setting up python3-pygraphviz (1.4~rc1-1build2.1) ...
$ ./test.py
success!

Now, here is an up-to-date armhf using 1.4~rc1-1build2:

$ cat << EOF >> test.py
> #!/usr/bin/env python3
>
> import pygraphviz
>
> graph = pygraphviz.AGraph()
> graph.add_node('foo')
> graph.add_node('bar')
> graph.add_edge('foo', 'bar')
> print('success!')
> EOF
$ chmod a+x test.py
$ ./test.py
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pygraphviz/agraph.py", line 1561, in __new__
    nh = gv.agnode(graph.handle, n.encode(graph.encoding), _Action.find)
KeyError: 'agnode: no key'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./test.py", line 8, in <module>
    graph.add_edge('foo', 'bar')
  File "/usr/lib/python3/dist-packages/pygraphviz/agraph.py", line 478, in add_edge
    e = Edge(self, eh=eh)
  File "/usr/lib/python3/dist-packages/pygraphviz/agraph.py", line 1625, in __new__
    s = Node(graph, nh=source)
  File "/usr/lib/python3/dist-packages/pygraphviz/agraph.py", line 1563, in __new__
    raise KeyError("Node %s not in graph." % n)
KeyError: 'Node None not in graph.'

Broken, as mentioned in the bug report. Now with 1.4~rc1-1build2.1:

$ sudo apt install python3-pygraphviz/bionic-proposed
<snip>
Setting up python3-pygraphviz (1.4~rc1-1build2.1) ...
$ ./test.py
success!

Fixed! Marking verification done.

This bug was fixed in the package python-pygraphviz - 1.4~rc1-1build2.1

---------------
python-pygraphviz (1.4~rc1-1build2.1) bionic; urgency=medium

  * No change rebuild (LP: #1834379)

 -- Emerson Knapp (aubdsk) <email address hidden> Thu, 27 Jun 2019 17:08:25 -0700

The verification of the Stable Release Update for python-pygraphviz has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In 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 regression-update so we can easily find any regressions.