flake.nix

{
  description = "Nix & NixOS configuration";

  inputs = {
    # Main Nixpkgs (Unstable)
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";

    # Stable Nixpkgs
    # Accesible through 'stable-packages' overlay
    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-24.11";

    # Home manager
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    nix-flatpak.url = "github:gmodena/nix-flatpak";

    nur.url = "github:nix-community/NUR";
  };

  outputs = {
    self,
    nixpkgs,
    home-manager,
    ...
  } @ inputs: let
    inherit (self) outputs;

    # Default username
    username = "mohamed";

    # Path to the configuration
    configPath = "/home/mohamed/Projects/nix-config";

    # Supported systems for your flake packages, shell, etc
    systems = [
      "aarch64-linux"
      "i686-linux"
      "x86_64-linux"
      "aarch64-darwin"
      "x86_64-darwin"
    ];

    # Generates an attributes set for each system
    forAllSystems = nixpkgs.lib.genAttrs systems;
  in {
    # Custom packages
    # Accessible through 'nix build', 'nix shell', etc
    packages = forAllSystems (system: import ./pkgs nixpkgs.legacyPackages.${system});

    # Nix files formatter
    # Available through 'nix fmt'
    formatter = forAllSystems (system: nixpkgs.legacyPackages.${system}.alejandra);

    # Custom packages and modifications, exported as overlays
    overlays = import ./overlays {inherit inputs;};

    # Reusable nixos modules to export
    # Usually stuff to upstream into nixpkgs
    nixosModules = import ./modules/nixos;

    # Reusable home-manager modules to export
    # Usually stuff to upstream into home-manager
    homeManagerModules = import ./modules/home-manager;

    # NixOS configuration entrypoint
    # Available through 'nixos-rebuild --flake .#hostname'
    nixosConfigurations = {
      crazy = nixpkgs.lib.nixosSystem {
        specialArgs = {inherit inputs outputs username configPath;};
        modules = [
          ./hosts/crazy
        ];
      };
    };

    # Standalone home-manager configuration entrypoint
    # Available through 'home-manager --flake .#username@hostname'
    homeConfigurations = {
      "mohamed@crazy" = home-manager.lib.homeManagerConfiguration {
        pkgs = nixpkgs.legacyPackages.x86_64-linux;
        extraSpecialArgs = {inherit inputs outputs;};
        modules = [
          ./home/users/mohamed
        ];
      };
    };
  };
}