I have worked with many languages - from Java, Delphi, C/C++, Assembly, PHP, Go, Rust etc. I don't really understand the hatred for Java. The build system in Java is not complicated .. whether Gradle, Maven or whatever unless your requirements are very complicated (multiple builds etc).

In my opinion the most complicated system out there is Javascript and all of the myriad tools needed to support that ecosystem. It has approached the complexity of C++ and perhaps even exceeded it