{
  description = "emilys config hell";
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    nixos-hardware.url = "github:nixos/nixos-hardware";
    flake-utils.url = "github:numtide/flake-utils";
    attic = {
      url = "github:zhaofengli/attic";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };
    disko = {
      url = "github:nix-community/disko";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    dns = {
      url = "github:kirelagin/dns.nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };
    fernglas = {
      url = "github:wobcom/fernglas";
      #inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };
    home-manager = {
      url = "github:nix-community/home-manager";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    kyouma-www = {
      url = "git+https://git.bsd.gay/snaki/kyouma-net.git";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.flake-utils.follows = "flake-utils";
    };
    nixos-needsreboot = {
      url = "github:thefossguy/nixos-needsreboot";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixvim = {
      url = "github:nix-community/nixvim";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.home-manager.follows = "home-manager";
    };
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    stylix = {
      url = "github:danth/stylix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.home-manager.follows = "home-manager";
    };
  };

  nixConfig = {
    extra-substituters = [
      "https://cache.kyouma.net"
    ];
    extra-trusted-public-keys = [
      "cache.kyouma.net:Frjwu4q1rnwE/MnSTmX9yx86GNA/z3p/oElGvucLiZg="
    ];
    builders-use-substitutes = true;
    builders = ''
      ssh://build@seras.kyouma.net x86_64-linux - 40 40 nixos-test,benchmark,big-parallel,kvm
      ssh://build@integra.kyouma.net aarch64-linux - 4 8 nixos-test,benchmark,big-parallel,kvm
    '';
  };

  outputs = { self, nixpkgs, flake-utils, ... }@inputs: let
    shinyflakes = import ./lib/shinyflakes inputs;
  in {
    hosts = shinyflakes.mapHosts {
      integra = { system = "aarch64-linux"; };
      lain = { system = "aarch64-linux"; };
    };

    colmena = shinyflakes.mapColmenaCfg {
      meta = {
        allowApplyAll = false;
        machinesFile = ./config/files/builders;
        nixpkgs = nixpkgs.legacyPackages.x86_64-linux;
        specialArgs = { inherit inputs; };
      };
    };

    nixosConfigurations = shinyflakes.mapNixosCfg {
      ryuuko-minimal = nixpkgs.lib.nixosSystem {
        system = "x86_64-linux";
        specialArgs = { inherit inputs; };
        modules = [
          ./config/hosts/_minimal/configuration.nix
          ./config/hosts/ryuuko/disko.nix
        ];
      };
      lain-minimal = nixpkgs.lib.nixosSystem {
        system = "aarch64-linux";
        specialArgs = { inherit inputs; };
        modules = [
          ./config/hosts/lain/iso.nix
        ];
      };
    };
    images.lain = self.nixosConfigurations.lain-minimal.config.system.build.sdImage;

    overlays = {
      kyouma = import ./pkgs/overlay.nix;
      otherPkgs = final: prev: {
          nixos-needsreboot = (inputs.nixos-needsreboot.packages.${final.system}.default);
      };
      default = self.overlays.kyouma;
    };
    hydraJobs = {
      inherit (self) packages images;
      nixosConfigurations = shinyflakes.mapHydraHosts self.nixosConfigurations;
    };
  } // flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system: let
    pkgs = import nixpkgs {
      inherit system;
      overlays = [ 
        self.overlays.kyouma
        self.overlays.otherPkgs
      ];
    };
  in {
    packages = shinyflakes.mapPackages (pkgs) {
#      newhost = pkgs.stdenv.mkDerivation {
#        name = "newhost";
#      };
    };
#    apps = rec {
#      newhost = self.packages.${system}.newhost;
#      default = newhost;
#    };
    devShells.default = pkgs.mkShell {
      packages = [ pkgs.colmena pkgs.sops ];
    };
  });
}