Steve Peters

it sounds like there are some performance concerns about octave 5.1; does that apply to the homebrew/core version or just the version that you package here?

the most common issue I've seen with osrf/gazebo plugins is storing the most recent time that simulation was run in order to throttle its update rate, then failing to reset...

> > Any hint on how it would be possible to overcome this issue? > > Some workarounds for now: > > * Using Ubuntu Bionic > * Compiling our...

> when a include fails then I loose the `pose` and `name`, which are inside the `include` tag. But the model is not included because I force to fail to...

I think we need fixes to gz-gui before this will build cleanly

> `track_drive.sdf` has these warning upon loading: > > ```shell > Warning [Utils.cc:129] [/sdf/world[@name="track_drive"]/model[@name="vehicle_blue"]/link[@name="base_link"]/inertial/pose[@relative_to=""]:/home/matosinho/dev/ROS2/fortress_party/install/share/ignition/ignition-gazebo6/worlds/track_drive.sdf:L88]: XML Attribute[relative_to] in element[pose] not defined in SDF. > Warning [Utils.cc:129] [/sdf/world[@name="track_drive"]/model[@name="vehicle_green"]/link[@name="base_link"]/inertial/pose[@relative_to=""]:/home/matosinho/dev/ROS2/fortress_party/install/share/ignition/ignition-gazebo6/worlds/track_drive.sdf:L1082]: XML Attribute[relative_to] in element[pose]...

If you have a source workspace and debian packages installed to `/usr`, it can be tricky to ensure that `ign` commands are using the intended libraries. If you have `ign-tools`...

> > I've disabled multi-threading in [6ac5110](https://github.com/ignitionrobotics/ign-gazebo/commit/6ac5110322dd43d9bfd76f2576d6e44cc2db0413). Let's what this does. > > It's tough to tell from just one CI run because these failures are very flaky. It would...

This reminds me of some of the discussions in ros2 about serialization and native data types. Is there any understanding we can draw from that experience?

Another thing to keep in mind for this discussion is that we have started supporting custom data in SDFormat files through data in [custom xml namespaces](http://sdformat.org/tutorials?tut=custom_elements_attributes_proposal). A map of `std::any`...