Server install – how to enable nomodeset?

I was able to install the latest version of NixOS on an Odroid H3+, which has Intel UHD grahics. When I boot, I can initially see the flow of text, but then it disappears as the screen becomes a “green screen” (vertical green/blue lines).

During install I was able to get this working by selecting the “nomodeset” option. How do I enable this in configuration.nix?

boot.kernelParams = [ "nomodeset" ]

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