Recently, I used acados a lot with ROS2, therefore I created a ROS2 node code generator ros_acados_nodegen. This package uses the generated json of the solver and can be simply installed with pip. It is an entry point for the usage of ROS2 with acados and not a fully functional node. You still need to process the specified published topics as well as subscriptions to states, inputs etc…
The package also comes with a acados installation script that can be used after installation of this package.