Anish Govind
598a43eace
- add my.username / my.gaming.enable / my.ai.local.enable options and gate optional app modules on them instead of per-host import lists - move vendor-neutral hardware.graphics into modules/graphical, leaving only NVIDIA-specific drivers and env vars in modules/hardware/nvidia - derive the primary user everywhere from my.username (users, getty, home-manager, tmpfiles) - de-duplicate Hyprland autostart down to a single system loginShellInit using the start-hyprland wrapper - consolidate all nixpkgs overlays into modules/core/nix.nix and use final.stdenv.hostPlatform.system - make the zsh rebuild helper target $(hostname) instead of hardcoded hades - add nixpkgs follows for nixos-hardware, pi and comfy-ui (single nixpkgs) - add .gitignore and a nixfmt flake formatter; format all nix files - remove empty browser.nix/display-configuration.nix and rename local_ai.nix -> local-ai.nix - document the my.* toggles in the README
75 lines
2.4 KiB
Markdown
75 lines
2.4 KiB
Markdown
# NixOS Configs
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Reproducible multi-host NixOS + Hyprland ("Silicon Volt") configuration.
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## Install (new machine)
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```bash
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# Setup disks
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nix run --experimental-features "nix-common flakes" github:nix-community/disko -- --mode disko --flake .#hades
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# install configs
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nixos-install --flake .#hades
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# set password
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nixos-enter --root /mnt -- passwd anish
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```
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## Rebuild (existing machine)
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```bash
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rebuild switch # zsh helper: sudo nixos-rebuild switch --flake ~/NixOS-Configs#<host>
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```
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## Adding a new host (e.g. a laptop)
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1. Create `hosts/<name>/` with `default.nix`, `hardware-configuration.nix`, and
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(optionally) `disko.nix`. Shared modules (`modules/core`, `modules/graphical`,
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`modules/apps`) are already pulled in by `commonModules` in `flake.nix` — the
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host only adds its own hardware/disko config.
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2. Register it in `flake.nix` under `nixosConfigurations`.
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3. Turn optional features on per machine via the shared `my.*` options:
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```nix
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# hosts/<name>/default.nix
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my = {
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username = "anish"; # default; change for a different primary user
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gaming.enable = false; # Steam, Gamemode, MangoHud
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ai.local.enable = false; # Ollama, ComfyUI, Open WebUI
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};
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```
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4. Declare host-specific displays in `hosts/<name>/default.nix`:
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```nix
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home-manager.users.anish.volt.monitors = [
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{
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output = "eDP-1"; # or "desc:<panel description>"
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mode = "2880x1800@120Hz"; # or "preferred"
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position = "auto";
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scale = 2;
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vrr = null; # optional per-monitor VRR
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}
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{ output = ""; mode = "preferred"; position = "auto"; scale = "auto"; } # fallback
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];
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```
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The `volt.monitors` default (any output @ preferred) keeps every machine working
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out of the box; hosts override only what they need. Hosts without an NVIDIA GPU
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simply don't import `modules/hardware/nvidia.nix` — all vendor env vars live there,
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while the vendor-neutral `hardware.graphics` stack lives in `modules/graphical`.
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## Feature toggles (`my.*`)
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Optional app modules are always imported (via `modules/apps/default.nix`) but only
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activate when a host sets the corresponding flag, so hosts never need to edit
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import lists:
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| Option | Enables |
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| --- | --- |
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| `my.username` | Primary user (users, home-manager, getty autologin) |
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| `my.gaming.enable` | Steam, Gamemode, MangoHud |
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| `my.ai.local.enable` | Ollama (CUDA), ComfyUI, Open WebUI |
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Hardware modules remain explicit imports per host (e.g. `modules/hardware/nvidia.nix`).
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