I think that we can run it using a DevKit and SDK for NX, I don't if exist a SDL version ported but if yes, we can use that or port our SDL.
The Nintendo Switch supports 32 bits apps, so maybe porting the libs and mapping the input events to the joycons we can play it
I would do it myself if I had a Switch, but maybe I can borrow one from some one at work. Does any one know if it requires a payed dev kit or similar?
Yes, you need a DevKit and the NX SDK from nintendo, you can not use the retail version, but at this point they only authorize it to people with prototypes of games to publish, maybe with a hacked device and unofficials sdks, but I don't like pyracy.
By the way, I developed before for Nintendo Swtich before and I think that the port is possible, maybe some Indie dev who has one devkit or when nintendo publish the sdk.