brew install libspatialite
geojson-to-sqlite toxmap.db hotspots hotspot_perimeters_for_data_store.geojson --spatialite
datasette toxmap.db --load-extension=spatialite
Download, unzip and install both Windows binaries here (based on your system, probably x64): http://www.gaia-gis.it/gaia-sins/
geojson-to-sqlite toxmap.db hotspots hotspot_perimeters_for_data_store.geojson --spatialite
datasette toxmap.db --load-extension=spatialite
sudo apt install libsqlite3-mod-spatialite
geojson-to-sqlite toxmap.db hotspots hotspot_perimeters_for_data_store.geojson --spatialite
datasette toxmap.db --load-extension=spatialite