• Stylix to have consistent theme
• Nixvim to configure nvim using nix
• For emacs there is nix-doom-emacs-unstraightened but I’ve not tried it and I would recommend trying Doom Emacs first
• devenv for per project nix managed dev environments
• nixd for nix lsp

That’s all I can think about that’s unique to nix. The rest is about configuring your DE, WM, terminal, shell, apps… how you like it like in any other distro, just through nix instead.