A wifi adapter based on mt7601 wouldn't work for me under NixOS.
`Direct firmware load for mt7601u.bin failed with error -2`

Resources on the web suggest this module is in the kernel since version 4.2
This reddit thread suggests adding `"MT7601 m"` or `"WL_MEDIATEK y"` to the kernel config.

I'm getting `error: unused option: XXXX` for both of these options? What does this mean?

mt7601 seems to be a quite common and it had worked for me on every other distro so far. I cannot be that difficult