The compiled jar is too large

[purofle]

I compiled a jar with ./gradlew packageUberJarForCurrentOS and it works well.But this jar is too large(almost 75mb).

After unpacking this jar, I found that there is almost a complete kotlin in jar/org/jetbrains/kotlin.

Is it a bug?
(I'm sorry for my English is very poor)

[olonho]

What is expected behavior for you? This jar is intended to contain all deps.

[AlexeyTsvetkov]

@purofle you can use Proguard to shrink the resulting jar https://www.guardsquare.com/manual/setup/gradle

However, this process might not work completely automatically, because ProGuard might remove some actually used classes (e.g. classes that are used through reflection). Sadly, we can't fully automate removal of potentially unnecessary classes.

[MrStahlfelge]

Please see #1174 for some suggestions how to use ProGuard