How to add to the library search path for custom plugins

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Hi,

I'm running a gz-sim (Garden) simulation starting from PX4 where I want to include a custom plugin into my model. The model works if I copy-paste the .so file to any of the default search locations, i.e.

- /home/anton/.gz/sim/plugins/
- /usr/lib/x86_64-linux-gnu/gz-sim-7/plugins/
- /home/anton/.ignition/gazebo/plugins/

However, I'd prefer to set an environment variable (as in Gazebo-Classic) to tell gazebo to search for additional plugins. In gazebo-classic I could do

export GAZEBO_PLUGIN_PATH="$PWD:$GAZEBO_PLUGIN_PATH"

but this doesn't seem to work in gz-sim garden.

Is there any other way to add to the library search path of gz-sim?