A lot of Linux OSes define protocols and interfaces with matching implementations. The kernel has syscalls, the GUI has a socket protocol etc. Sure the individ

A lot of Linux OSes define protocols and interfaces with matching implementations. The kernel has syscalls, the GUI has a socket protocol etc. Sure the individual components pick a language but there's no singular language applications are "supported" for (except libraries like GTK which you don't really need), that's how we get nice things like TCL/TK and guile.