selfprivacy-nixos-config/flake.nix

{
  description = "Selfprivacy NixOS configuration flake";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs";

    selfprivacy-overlay.url =
      "git+https://git.selfprivacy.org/SelfPrivacy/selfprivacy-nix-repo.git";

    # the /etc/nixos folder input is expected to be set by the caller
    # for example, upon nix build using --override-input
    etc-nixos.flake = false;
  };

  outputs =
    { self
    , etc-nixos
    , nixpkgs
    , selfprivacy-overlay
    }:
    let
      system = "x86_64-linux";
      userdata =
        builtins.fromJSON (builtins.readFile "${etc-nixos}/userdata.json");
    in
    {
      nixosConfigurations = {
        just-nixos = nixpkgs.lib.nixosSystem {
          specialArgs = { inherit system userdata; };
          modules = [
            # SelfPrivacy overlay
            {
              nixpkgs.overlays = [ selfprivacy-overlay.overlay ];
              environment.etc.selfprivacy-nixos-config-source.source =
                etc-nixos.outPath;
            }
            # machine specifics
            "${etc-nixos}/hardware-configuration.nix"
            # main configuration part
            ./configuration.nix
          ];
        };
      };
    };
}