The script plugin
A script plugin is nothing but a Gradle file, which we import into other build files. It is the same as modularizing your code across different classes. When a build file size exceeds to a certain limit or diverse functionalities are clubbed to a single file, it might be a better option to divide the cohesive tasks into different build files. Then, you can import these files to the main build file to use the new functionalities.
To import the build file you can use the following code:
apply from: <Path of otherfile.gradle>
Here, the path could be a local file or a location relative to the project directory or a valid URL. However, if you mention the URL, the downside is that the file will be downloaded each time. Once the build file is imported, you can use the tasks defined in the build file without any additional configuration.
If you are adding multiple build files in the main build file, make sure you do not have tasks with the same name in the imported build files...