@Jeremy-Shubert To answer my own question...you create a new software based SPI device using insmod spi-gpio-custom, then you can access this device on the bus you created with the standard Python module, just point it to the newly created device. I haven't been able to get the CLK and data signals working but the CS triggers using this method

you can try this python lib https://github.com/bhaskar-anil429/MCP9600/blob/master/MCP9600.py or this c https://github.com/bhaskar-anil429/MCP9600/blob/master/MCP9600.c You can replace i2c read write with onion syntax.

@Theodore-Borromeo That's what I thought, but it's not the case. Using -rpath options together with their libonionspi.so did nothing. I'm not sure what's going on. Anyway, I was doing this for fun, and to prove a point. It is possible to compile and link on the Onion Omega using gcc. If you have the diskspace, since gcc is about 22MB. Cloud compiling is coming soon. No need for this stuff.