I want to be able to call the low level LWJGL C functions using ffi from other languages like Go, Pony or nodejs. Is that possible or will it need some hacks?
The LWJGL native libraries export JNI functions only, i.e. functions that look like "Java_org_lwjgl_glfw_GLFW_glfwInit" and not like "glfwInit". What are you trying to do exactly?