Topic category: Plugins and third-party tools
Although we no longer support or encourage the use of 1.12.2, we still want you to update to newer versions. For this reason, I updated the Minecraft 1.12.2 generator to support 2020.3. All new features are not supported in it, though, but feel free to open pull requests.
Keep in mind you need to install the plugin yourself. You can support development by contributing features (eg. add missing features from 2020.3) on https://github.com/Pylo/MCreatorGenerator-Forge-1.12.2/releases.
Contribute to https://github.com/Pylo/MCreatorGenerator-forge-1.12.2.
This generator is made to support 2020.3 and 2020.4 when released, but as said, it is not officially supported and not encouraged to be used.