Systems-level programming is a frontier for language design precisely because higher-level domains are already so well-served by established platforms. If your

Systems-level programming is a frontier for language design precisely because higher-level domains are already so well-served by established platforms. If your problem can be solved in Python or JavaScript, you're potentially creating a lot of work for yourself by using a language that's sort of like either of these, but not actually compatible with their libraries. The internet is littered with upstart languages that were made this way and withered on the vine. On the other hand, if you're working in a problem space with tighter performance constraints, and you already can't touch these languages, and you can't even count on libraries written in C or C++, then you suddenly, paradoxically, have a lot more options.