NixOS & Home Manager Configuration ❄️

This repository contains my personal and declarative configuration for NixOS, built around Flakes and Home Manager. It's designed for my daily use with a GNOME desktop environment, a development setup (especially for Epitech projects), and workflow optimizations using the Fish shell.

🚀 Key Features

• Global File Management via Flakes: Ensured reproducibility through flake.nix.
• Desktop Environment: Centralized GNOME via GDM with a few useful extensions.
• Shell & Terminal: Fish shell configured with the Tide theme via setup.sh.
• Impermanence: System state persistence management using the nix-community/impermanence module.
• Development & Epitech:
  • C/C++ Toolchain: clang, llvm 20, gcovr, criterion, valgrind, gnumake42 (ideal for Epitech coding styles and tests).
  • Integrated Tools: Docker, Go, Rustup, Kubernetes (Kind, Kubectl), Direnv, Devenv, etc.
  • Editors: VSCode (pre-configured with JetBrainsMono Nerd Font) and Zed.
  • Deployment: Exegol (cybersecurity/dev tools installable via setup.sh).
• Additional Software: Integration of the Zen Browser directly from its flake.
• Hardware Support: Configuration for boot, Bluetooth, audio, fingerprint reader, and power management (thermald).

📂 Project Structure

.
├── flake.nix                  # Entry point of the configuration
├── config.nix                 # Global NixOS configuration (system, accounts, boot...)
├── env.nix                    # User environment variables (name, git, keys...)
├── home.nix                   # Entry point for Home Manager
├── setup.sh                   # Post-installation setup script (Fish Tide, Exegol...)
└── modules/
    ├── home-manager/          # User space configuration modules
    │   ├── development.nix    # Development tools and environments
    │   ├── epiclang.nix       # Specific configurations (C/C++, GCC, Clang...)
    │   ├── fish.nix           # Shell configuration
    │   ├── git.nix            # Git settings
    │   ├── ssh.nix            # OpenSSH client configuration
    │   └── xdg.nix            # User database settings
    └── ...                    # System modules (audio, gnome, network, gpg, boot...)

⚙️ Environment Variables (env.nix)

All personal information is gathered in env.nix, such as the username, GPG keys, Git email, etc. This file is used by different parts of the code (nixosModules & homeManager) to avoid redundancy. Make sure to adapt these credentials for your own needs when reusing the project.

🛠️ Installation & Updates

Apply System Configuration

To apply the configuration directly to your system:

sudo nixos-rebuild switch --flake .#nixos

Alternatively, use nh (a useful helper tool installed on the system) for a clean build or build profile management:

nh os switch .

Post-Installation Setup

Once the system is updated, remember to run the setup script to configure the Fish shell theme (Tide) and additional virtual environments:

./setup.sh

✨ Cache and Store Management

The configuration includes various cleanup tasks (Garbage Collection configured weekly) and enables automatic optimization of the nix-store. Experimental NixOS features are enabled by default (nix-command and flakes).