I've managed to stand up a CKAN instance, and would now like to preview GeoJSON data in CKAN. According to the ckanext-spatial documentation, I don't need to install the full ckanext-spatial package, I only need to add resource_proxy geojson_preview to my ckan.pluginsvariable in my config file.
I'm able to successfully add resource_proxy, but when I add geojson_preview and restart my server, I get a 500 error. The server logs report a PluginNotFoundException. I assume this is referring to the ckanext-spatial plugin, which I'd prefer not to install (includes PostGIS, etc) is there any way around this?