NixOS Configuration

Personal NixOS configuration for an Acer Swift SFX14-71G laptop with Intel + NVIDIA hybrid graphics.

Features

Performance-Optimized Kernel

Uses the CachyOS kernel with:

• LTO (Link-Time Optimization)
• x86-64-v3 architecture targeting (AVX2)
• BBR congestion control

Thanks to xddxdd/nix-cachyos-kernel for the Nix packaging and providing it's Caches!

Hybrid Graphics

NVIDIA PRIME offload mode for optimal battery life:

• Intel iGPU for daily use
• NVIDIA dGPU available on-demand via nvidia-offload
• Fine-grained power management (GPU sleeps when idle)

Power Management

Comprehensive TLP configuration with distinct AC/battery profiles:

• AC: Performance governor, turbo boost enabled
• Battery: Powersave governor, aggressive power saving
• TLP Power Profiles daemon for easy switching

Optimized Builds

Custom package overlays with performance flags:

# Alacritty with mold linker and full LTO
RUSTFLAGS = "-C target-cpu=x86-64-v3 -C lto=fat -C codegen-units=1 -C link-arg=-fuse-ld=mold"

Structure

.
├── flake.nix                 # Flake entry point
├── hosts/
│   └── swift-sfx14-71g/      # Host-specific configuration
├── modules/
│   ├── nixos/                # System modules
│   │   ├── boot.nix          # CachyOS kernel, bootloader
│   │   ├── graphics/         # Intel/NVIDIA configuration
│   │   ├── power-management/ # TLP, thermald
│   │   └── ...
│   └── home-manager/         # User modules
│       ├── shell/            # zsh, starship
│       ├── desktop/          # GNOME, extensions
│       ├── programs/         # git, browser
│       └── ...
├── overlays/                 # Package customizations
└── secrets/                  # SOPS encrypted secrets

Stack

Component	Choice
Kernel	CachyOS (LTO, x86-64-v3)
Desktop	GNOME + Wayland
Shell	Zsh + Starship
Terminal	Alacritty
Browser	Zen Browser
Editor	VS Code
Audio	PipeWire
Secrets	SOPS + age

GNOME Setup

• Dash to Dock (bottom, autohide)
• Blur My Shell
• AppIndicator support
• macOS-style window buttons
• Dark mode

Quick Start

# Clone
git clone https://github.com/ezozbek36/nix.git
cd nix

# Enter dev shell (includes nixd, alejandra, statix, deadnix)
nix develop

# Build and switch
sudo nixos-rebuild switch --flake .#swift-sfx14-71g

# Or using nh
nh os switch .

Binary Caches

Pre-configured caches for faster builds:

• nix-community.cachix.org
• cuda-maintainers.cachix.org
• attic.xuyh0120.win/lantian (CachyOS kernel)

Development

# Format
nix fmt

# Lint
statix check .

# Find dead code
deadnix .

License

MIT