Hi;
As the mod only makes small changes to the way that placement logic works, it should function fine if you change the .json file's contents to this.
{
"name": "soil-anywhere",
"version": "1.0.1",
"title": "Soil Anywhere",
"author": "Buggi",
"dependencies": [
"base >= 2.1.9",
"space-age >= 2.1.9"
],
"description": "Place your newly made and expensive overgrowth soil anywhere! Optional setting for Artifical type override.",
"factorio_version": "2.1"
}
Remember to repack the mod with the correct version information.