You can manage multiple machines with a single Nix configuration git repository and modularize the configuration as much as you want. You can have a config with a desktop environment that you skip on servers, override individual variables for a specific host or do whatever you want. You can even remote deploy it all with a simple nixos-rebuild build --target-host "user@host" and it works across different architectures too (e.g. build on your fast x86 machine and deploy to a slow RaspberryPi).
You can manage multiple machines with a single Nix configuration git repository and modularize the configuration as much as you want. You can have a config with a desktop environment that you skip on servers, override individual variables for a specific host or do whatever you want. You can even remote deploy it all with a simple
nixos-rebuild build --target-host "user@host"and it works across different architectures too (e.g. build on your fast x86 machine and deploy to a slow RaspberryPi).