Hacking Engines for R4i Gold 3DS Homebrew/3DS Homebrew in General

[GamingBlur]

I was wondering if it would be possible to use any preexisting engines for homebrew on the R4i or on the 3DS in general, particularly Unity or the Headcannon Engine. I ask because I'm interested in doing my own games on the console and in general, even if the homebrew scene is kinda dead for the R4i. Sorry if this is a stupid question, but I'm still pretty new to the DS/3DS Homebrew field, even if I've been interested in it for quite a while. Also, I realize Unity on the R4i is pretty much impossible, but I'm still interested to see if there was some undiscovered potential to implement it.