NixOS — Hyprland (illogical-impulse) + NVIDIA + Mullvad

A flake-based NixOS configuration that gives you:

• Hyprland desktop via soymou/illogical-flake (end-4's Illogical Impulse dotfiles + QuickShell), wired in through home-manager
• NVIDIA proprietary driver with Wayland/KMS support
• Mullvad VPN (daemon + GUI)

Layout

nixos-config/
├── flake.nix                  inputs + nixosConfigurations
├── configuration.nix          system glue (users, audio, DM, fonts, ...)
├── hardware-configuration.nix  PLACEHOLDER — regenerate on your machine
├── home.nix                   home-manager: enables programs.illogical-impulse
└── modules/
    ├── nvidia.nix
    ├── hyprland.nix
    ├── mullvad.nix

Before you build

1. Set your identity in flake.nix:

   username = "youruser";
   hostname = "nixos";

2. Generate real hardware config on the target machine and replace the stub:

   nixos-generate-config --dir .

   (The included hardware-configuration.nix is a non-bootable placeholder.)
3. Check the NVIDIA driver type in modules/nvidia.nix:
   • open = true for RTX 20xx / GTX 16xx or newer (Turing+)
   • open = false for GTX 10xx and older (Pascal and earlier)
4. Set your real time.timeZone in configuration.nix.

Build / switch

Copy the folder to /etc/nixos (or keep it anywhere and point --flake at it):

First switch into Determinate Nix only. Because the current system doesn't have Determinate's binary cache configured yet, the initial rebuild needs two extra flags so it can fetch Determinate Nix:

sudo nixos-rebuild switch \
  --option extra-substituters https://install.determinate.systems \
  --option extra-trusted-public-keys cache.flakehub.com-3:hJuILl5sVK4iKm86JzgdXW12Y2Hwd5G07qKtHTOcDCM= \
  --flake .#nixos

Every rebuild after that is just:

sudo nixos-rebuild switch --flake .#nixos

Replace nixos with your hostname if you changed it.

Don't have Nix/NixOS yet?

If you're starting from a non-NixOS machine, install Determinate Nix first with the official installer, then build the flake:

curl -fsSL https://install.determinate.systems/nix | sh -s -- install

Or use Determinate's NixOS ISO. Either way, once Determinate Nix is present the two extra flags above aren't needed.

After first boot

• Log in via SDDM and pick the Hyprland session.
• Connect the VPN: mullvad account login <ACCOUNT_NUMBER> then mullvad connect (or use the tray GUI).

Notes

• SSH is disabled by default. To enable it, uncomment the services.openssh block.
• UWSM: Hyprland launches via UWSM. Do not also enable home-manager's wayland.windowManager.hyprland.systemd.enable — it conflicts.
• Updating Determinate Nix: the Nix daemon updates itself out-of-band (sudo determinate-nixd upgrade). To pull a newer pinned Determinate flake module, run nix flake update determinate and rebuild.
• This targets nixos-unstable. Keep system.stateVersion / home.stateVersion at the value from your original install.