# NixOS Configs

Reproducible multi-host NixOS + Hyprland ("Silicon Volt") configuration.

## Install (new machine)

```bash
# Setup disks
nix run --experimental-features "nix-common flakes" github:nix-community/disko -- --mode disko --flake .#hades

# install configs
nixos-install --flake .#hades

# set password
nixos-enter --root /mnt -- passwd anish
```

## Rebuild (existing machine)

```bash
rebuild switch   # zsh helper: sudo nixos-rebuild switch --flake ~/NixOS-Configs#<host>
```

## Adding a new host (e.g. a laptop)

1. Create `hosts/<name>/` with `default.nix`, `hardware-configuration.nix`, and
   (optionally) `disko.nix`; import the shared modules (`modules/core`,
   `modules/graphical`, `modules/apps`).
2. Register it in `flake.nix` under `nixosConfigurations`.
3. Declare host-specific displays in `hosts/<name>/default.nix`:

```nix
home-manager.users.anish.volt.monitors = [
  {
    output = "eDP-1";              # or "desc:<panel description>"
    mode = "2880x1800@120Hz";      # or "preferred"
    position = "auto";
    scale = 2;
    vrr = null;                    # optional per-monitor VRR
  }
  { output = ""; mode = "preferred"; position = "auto"; scale = "auto"; } # fallback
];
```

The `volt.monitors` default (any output @ preferred) keeps every machine working
out of the box; hosts override only what they need. Hosts without an NVIDIA GPU
simply don't import `modules/hardware/nvidia.nix` — all vendor env vars live there.