Bug#871165: ros-ros-comm: FTBFS: ImportError: No module named yaml

[Lucas Nussbaum]

Source: ros-ros-comm
Version: 1.12.6-2
Severity: serious
Tags: buster sid
User: debian-qa at lists.debian.org
Usertags: qa-ftbfs-20170805 qa-ftbfs
Justification: FTBFS on amd64

Hi,

During a rebuild of all packages in sid, your package failed to build on
amd64.

Relevant part (hopefully):
> make[3]: Entering directory '/<<PKGBUILDDIR>>/build'
> cd /<<PKGBUILDDIR>>/build && /usr/bin/cmake -E cmake_depends "Unix Makefiles" /<<PKGBUILDDIR>> /<<PKGBUILDDIR>>/tools/topic_tools /<<PKGBUILDDIR>>/build /<<PKGBUILDDIR>>/build/tools/topic_tools /<<PKGBUILDDIR>>/build/tools/topic_tools/CMakeFiles/topic_tools_generate_messages_py.dir/DependInfo.cmake --color=
> [  9%] Generating Lisp code from roscpp/Logger.msg
> cd /<<PKGBUILDDIR>>/build/clients/roscpp && ../../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/genlisp/gen_lisp.py /<<PKGBUILDDIR>>/clients/roscpp/msg/Logger.msg -Iroscpp:/<<PKGBUILDDIR>>/clients/roscpp/msg -p roscpp -o /<<PKGBUILDDIR>>/build/devel/share/common-lisp/ros/roscpp/msg
> Traceback (most recent call last):
>   File "/usr/lib/genpy/genmsg_py.py", line 44, in <module>
>     import genpy.generator
>   File "/usr/lib/python2.7/dist-packages/genpy/__init__.py", line 34, in <module>
>     Scanning dependencies of target topic_tools_generate_messages_py
> from . message import Message, SerializationError, DeserializationError, MessageException, struct_I
>   File "/usr/lib/python2.7/dist-packages/genpy/message.py", line 44, in <module>
>     import yaml
> ImportError: No module named yaml
> make[3]: Leaving directory '/<<PKGBUILDDIR>>/build'
> make -f tools/topic_tools/CMakeFiles/topic_tools_generate_messages_py.dir/build.make tools/topic_tools/CMakeFiles/topic_tools_generate_messages_py.dir/build
> clients/roscpp/CMakeFiles/roscpp_generate_messages_py.dir/build.make:69: recipe for target 'devel/lib/python2.7/dist-packages/roscpp/msg/_Logger.py' failed
> make[3]: *** [devel/lib/python2.7/dist-packages/roscpp/msg/_Logger.py] Error 1

The full build log is available from:
   http://aws-logs.debian.net/2017/08/05/ros-ros-comm_1.12.6-2_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.