When that directory changes between Gradle invocations, the state is discarded and recreated.
Typically, the Gradle user home directory does not change for a given process, so this is effectively process state.

The build process state is managed by the `BuildProcessState` class. An instance is created once for a given process.

### Build session state

A "build session" represents a single invocation of Gradle, for example when you run `gradlew build`.