Nix Configuration for macOS

Declarative macOS system configuration using nix-darwin and home-manager.

Overview

This flake manages:

• System packages via nixpkgs and Homebrew
• GUI applications via Homebrew Casks
• Mac App Store apps via mas
• macOS system preferences (Dock, Finder, keyboard, etc.)
• User environment (shell, Git, VS Code, GPG, etc.)

Prerequisites

• macOS on Apple Silicon (aarch64-darwin)
• Nix package manager with flakes enabled

Installing Nix

The recommended way to install Nix on macOS is using the Determinate Systems Nix Installer:

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

This installer:

• Enables flakes and the unified CLI by default
• Stores a receipt for easy uninstallation
• Works seamlessly with nix-darwin

Usage

Update flake inputs and apply the configuration:

nix flake update --flake ~/.config/nix

sudo darwin-rebuild switch --flake ~/.config/nix#macos

Structure

~/.config/nix/
├── flake.nix                  # Flake definition and inputs
├── darwinConfigurations/
│   └── macos.nix              # System-level configuration
└── homeConfigurations/
    └── shivangswain.nix       # User-level configuration

License

This project is licensed under the MIT License. See LICENSE for details.