No. First of all the only semi publicly leaked SDK from June 2017, is a pre release SDK from 2016. A lot of things have changed since then, I have looked at the documentation it is very out of date. Secondly it is completely illegal to do so, not only does it break the NDA developers sign with Nintendo when signing up for the Nintendo Developer program, but it is considered a "trade secret".
Any developer who uses anything from the SDK in their toolchains will get legal trouble from Nintendo.
There are developers working on porting nouveau, Nvidias open source driver to Switch, but it takes time, so patience is key.