So I tried to install using the 3 installers that are listed on the downloads page, yet none of these seemed to work as I wouldn’t get any display after selecting any of the options.

After some research and some thinking, I came to the conclusion that it was due to the installer live iso not loading the amdgpu drivers needed for my card (rx 6600). From this point, you’ve got three options

configuration.nix

services.xserver.enable = true

services.xserver.videoDrivers = [ "amdgpu" ]

hardware-configuration.nix

boot.initrd.kernelModules = [ "amdgpu" ];

Finally, ran

nixos-rebuild switch

powered off, switched to my graphics card and everything worked fine after that