Supporting Apache Arrow in many languages are important.
Providing GLib based C API will increase Apache Arrow bindings.
GLib based C API can use GObject Introspection ( https://wiki.gnome.org/action/show/Projects/GObjectIntrospection ). GObject Introspection is a middleware layer for creating language bindings automatically.
I already created Ruby bindings for Apache Arrow with this GLib based C API: https://github.com/kou/red-arrow
Lua, Go and other language bindings will be created automatically.