Basically it's for Forge now but it required a lot of internal changes, so you are getting a new release on the fabric side too.
Should actually fix right clicks placing blocks against packages.
Also there's a half-finished feature where you can place a slime or honey block against a package to make it "sticky".
Developer information
Projects on Modrinth are automatically available through a Maven repository for use with JVM build tools such as Gradle.
maven { name = "Modrinth"; url = "https://api.modrinth.com/maven" }