{
  description = "My machines";

  inputs = {
    # Nixpkgs and unstable
    nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";

    # sops-nix
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    # VSCode community extensions
    nix-vscode-extensions = {
      url = "github:nix-community/nix-vscode-extensions";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };
  outputs = {
    self,
    nixpkgs,
    sops-nix,
    ...
  } @ inputs:
    with inputs; {
      # Use nixpkgs-fmt for 'nix fmt'
      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixpkgs-fmt;

      # Each subdirectory in ./machines is a host. Add them all to
      # nixosConfigurations. Host configurations need a file called
      # configuration.nix that will be read first
      nixosConfigurations = builtins.listToAttrs (map
        (x: {
          name = x;
          value = nixpkgs.lib.nixosSystem {
            # Make inputs and the flake itself accessible as module parameters.
            # Technically, adding the inputs is redundant as they can be also
            # accessed with flake-self.inputs.X, but adding them individually
            # allows to only pass what is needed to each module.
            specialArgs = {flake-self = self;} // inputs;

            system = "x86_64-linux";

            modules = [
              (./nixos/hosts + "/${x}/default.nix")
              sops-nix.nixosModules.sops
            ];
          };
        })
        (builtins.attrNames (builtins.readDir ./nixos/hosts)));
    };
}