And example development environment for Xpublish and it's plugins using git submodules (the magic incantation to add a new submodule is git submodule add https://github.com/noaaroland/xpublish_example.git xpublish_example).
It uses https://pixi.sh/latest/ to manage dependencies.
To run a test server, try pixi run demo which will launch app/main.py,
with a selection of plugins and datasets.
Each plugin can be hacked on individually and be on it's own branch.
Additional plugins can be added to the [pypi-dependencies] table in pixi.toml,
in similar patterns to the existing ones.