Our target platform is linux-aarch64 (Nvidia Jetson), but we want to develop mostly on linux-64 platform. We also would like to support Windows for Unity and Ground Control. Moreover, we want to use ROS2 Humble, which ships with binaries for Ubuntu 22, but Jetson is setup on Ubuntu 20.

Recently there was a lot of development put into solution of our problems. For cross-platform development we could use Pixi - it's the new package manager built in Rust. It provides lightning-fast environment solving - obviously faster than Conda (even with libmamba-conda-solver), even faster than C++ Mamba (same devs behind it). There is an example using Pixi with Nav2 stack.

For the ROS we could either built from source or use RoboStack - they provide conda channel with ROS binaries. We should only watch out, as not every ROS package is available