True Darkness Biomes
This is an unofficial fork of the original True Darkness mod by GrondagTheBarbarian, adapted for Minecraft versions 1.20.1 and above. The main differences in this version are complete source code transparency and support for biome-dependent darkness levels.

Biome Support
The modification allows customization of when True Darkness should apply in different biomes. You can specify in which biomes the full darkness effect should not work, or conversely - define specific zones where True Darkness will always be active.
The need for this functionality arose from incompatibility between the original True Darkness and AlexsCaves mod, particularly with Primordial Caves, which would otherwise be completely dark without such configuration. Similarly, you can exclude other biomes from the effect, such as lush caves.
Adding Your Own Biomes
You can add any Minecraft biomes using the standard naming convention. After the first world launch, a configuration file "darkness-biomes.json" is created where you can input the desired biomes.
Example of a simple configuration:
{"Biomes":["minecraft:lush_caves","alexscaves:primordial_caves"]}
Please note: future updates for versions above 1.20.1 will only be available for the Neoforge platform.
Potential Issues
In case errors are found, reports can be submitted through the Github system.