Should be able to hide the dependencies from the other plugins

[adietish]

Currently the dependencies that we ship are visible to the other plugins and ex. the outdated gson plugin that we package might cause problems to other plugins in the same IDE.

A possible approach could be to use the shadow gradle plugin: https://imperceptiblethoughts.com/shadow/introduction/
It would create a single fat jar with all the dependencies thus hiding them.

[adietish]

I tried to configure the distribution that is created when building the plugin but I failed in creating something valid.
The following configuration in build.gradle created a zip (when running the build task) with a fat jar within it called shadow.jar. Such a distribution isn't a valid plugin though:

distributions {
    custom {
        contents {
            from shadowJar
        }
    }
}

[adietish]

Jetbrains seems to work on supporting customizations to the packaging of the plugin at JetBrains/intellij-platform-gradle-plugin#808. Nothing is released yet though.
Another customization for the current build was closed/rejected here: JetBrains/intellij-platform-gradle-plugin#1069