> The core kernel of HM is implemented primarily in a confined
subset of C, consisting of 90k lines of code (LoC), which
includes the basic functionalities. All other OS services are
decoupled and can be deployed individually, totaling over 1
million LoC. The HM’s build system can assemble the OS
services based on detailed configurations specified for various
scenarios, such as placing OS services in different isolation
classes or coalescing some OS services.
EDIT: according to https://blog.csdn.net/qiushi_1990/article/details/140528431 from 19.07.2024 those are the languages supported for writing apps, not necessarily the implementation language(s) for the μk?
> - 多语言开发支持 支持多种语言开发 如ArkTS和C/C++ 进一步提升了应用性能。
EDIT2: https://zh.wikipedia.org/wiki/鸿蒙星河版 lists C,C++,Java