NixOS vs Void Linux: What are the differences?

## Introduction
Key differences between NixOS and Void Linux are outlined below.

1. **Package Management**: NixOS uses the Nix package manager, which manages packages as isolated, immutable, and reproducible units. In contrast, Void Linux uses the XBPS package manager, focusing on simplicity, efficiency, and ease of use with a traditional package management approach.
2. **Init System**: NixOS uses systemd as its default init system, providing features like service management, event logging, and device management. Conversely, Void Linux offers runit as its init system, known for its simplicity, speed, and reliability in managing system services.
3. **Rolling Release vs. Fixed Release**: NixOS follows a rolling release model, continually updating packages and system components to their latest versions. On the other hand, Void Linux follows a fixed release model, providing periodic stable releases with curated package updates.
4. **Configuration Management**: NixOS utilizes a declarative configuration model, allowing users to specify the desired system state in a configuration file. In contrast, Void Linux relies on manual system configuration through configuration files, scripts, and command-line tools.
5. **Community Support**: NixOS has a smaller but dedicated community focused on functional programming, declarative systems, and reproducibility. Meanwhile, Void Linux boasts a more active and diverse community with a broader range of user interests and contributions.
6. **Desktop Environment Integration**: NixOS offers desktop environments through declarative configurations, ensuring consistent setups and reproducibility. Void Linux provides desktop environment choices through traditional package installations, offering more flexibility for customization and experimentation.

In Summary, the key differences between NixOS and Void Linux involve their package management approach, init systems, release models, configuration management, community support, and desktop environment integration.