Packages require LLTng version in PPA
As per the root README, tracing packages depend on a LTTng version that is available in PPA. In Focal, that PPA is currently lacking a Release file and updating apt sources fails. Moreover, a system dependency that's not in upstream Ubuntu repositories is problematic when it comes to packaging and releasing debians.
Why can't the LTTng version shipped with Ubuntu be used instead? At the moment, this is rendering Foxy pre-released debians for ros2_tracing
unusable.
Edited by Michel Hidalgo