Bug#871042: python-genpy: missing dependency on python-yaml

[Adrian Bunk]

Package: python-genpy
Version: 0.6.6-1
Severity: serious
Control: affects -1 src:ros-bond-core

https://tests.reproducible-builds.org/debian/history/ros-bond-core.html
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ros-bond-core.html

...
cd /build/1st/ros-bond-core-1.7.18/obj-x86_64-linux-gnu/bond && ../catkin_generated/env_cached.sh /usr/bin/python /usr/lib/genlisp/gen_lisp.py /build/1st/ros-bond-core-1.7.18/bond/msg/Constants.msg -Ibond:/build/1st/ros-bond-core-1.7.18/bond/msg -Istd_msgs:/usr/share/std_msgs/cmake/../msg -p bond -o /build/1st/ros-bond-core-1.7.18/obj-x86_64-linux-gnu/devel/share/common-lisp/ros/bond/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>
    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
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>
    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
bond/CMakeFiles/bond_generate_messages_py.dir/build.make:66: recipe for target 'devel/lib/python2.7/dist-packages/bond/msg/_Constants.py' failed
make[3]: *** [devel/lib/python2.7/dist-packages/bond/msg/_Constants.py] Error 1


python-genpy seems to lack a dependency on python-yaml.