{
  description = "bold.daemon";

  inputs = {
    unstable.url = "github:NixOS/nixpkgs";
    unstableSmall.url = "github:NixOS/nixpkgs/nixos-unstable-small";

    #stable.url = "github:NixOS/nixpkgs/nixos-22.11-small";
    stable.url = "github:NixOS/nixpkgs/nixos-23.05-small";

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

    xin-secrets = {
      url = "git+ssh://xin-secrets-ro/qbit/xin-secrets.git?ref=main";
      inputs.sops-nix.follows = "sops-nix";
    };

    nixos-hardware = {url = "github:NixOS/nixos-hardware/master";};

    emacs-overlay = {
      url = "github:nix-community/emacs-overlay/d54a1521619daa37c9aa8c9e3362abb34e676007";
      inputs.nixpkgs.follows = "stable";
    };

    darwin = {
      url = "github:lnl7/nix-darwin";
      inputs.nixpkgs.follows = "unstableSmall";
    };

    microca = {
      url = "github:qbit/microca";
      inputs.nixpkgs.follows = "unstable";
    };
    gostart = {
      url = "github:qbit/gostart";
      inputs.nixpkgs.follows = "stable";
    };
    pr-status = {
      url = "github:qbit/pr-status-pl";
      inputs.nixpkgs.follows = "stable";
    };
    taskobs = {
      url = "github:qbit/taskobs";
      inputs.nixpkgs.follows = "unstable";
    };
    xintray = {
      url = "github:qbit/xintray";
      inputs.nixpkgs.follows = "unstable";
    };
    tsvnstat = {
      url = "github:qbit/tsvnstat";
      inputs.nixpkgs.follows = "unstable";
    };
    pots = {
      url = "github:qbit/pots";
      inputs.nixpkgs.follows = "unstable";
    };
    po = {
      url = "github:qbit/po";
      inputs.nixpkgs.follows = "unstable";
    };
    tsRevProx = {
      url = "github:qbit/ts-reverse-proxy";
      inputs.nixpkgs.follows = "unstable";
    };

    gqrss = {
      url = "github:qbit/gqrss";
      flake = false;
    };

    peerix = {
      url = "github:cid-chan/peerix";
      inputs.nixpkgs.follows = "stable";
    };
  };

  outputs = {
    self,
    darwin,
    gostart,
    nixos-hardware,
    peerix,
    po,
    pots,
    pr-status,
    stable,
    tsRevProx,
    tsvnstat,
    unstable,
    unstableSmall,
    xin-secrets,
    xintray,
    ...
  } @ inputs: let
    xinlib = import ./lib {inherit (unstable) lib;};
    supportedSystems = ["x86_64-linux"];
    #[ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
    forAllSystems = unstable.lib.genAttrs supportedSystems;
    unstablePkgsFor = forAllSystems (system:
      import unstable {
        inherit system;
        #imports = [ ./overlays ];
      });
    stablePkgsFor = forAllSystems (system:
      import stable {
        inherit system;
        #imports = [ ./overlays ];
      });
    hostBase = {
      modules = [
        # Common config stuffs
        (import ./default.nix)

        xin-secrets.nixosModules.sops
        xin-secrets.nixosModules.xin-secrets

        peerix.nixosModules.peerix
      ];
    };

    overlays = [
      inputs.emacs-overlay.overlay
      inputs.gostart.overlay
      inputs.microca.overlay
      inputs.peerix.overlay
      inputs.pots.overlay
      inputs.pr-status.overlay
      inputs.taskobs.overlay
      inputs.tsRevProx.overlay
    ];

    buildSys = sys: sysBase: extraMods: name:
      sysBase.lib.nixosSystem {
        system = sys;
        specialArgs = {
          inherit inputs;
          inherit xinlib;
        };
        modules =
          hostBase.modules
          ++ extraMods
          ++ [
            {
              nix = {
                registry.nixpkgs.flake = sysBase;
                registry.stable.flake = stable;
                registry.unstable.flake = unstable;
                nixPath = ["nixpkgs=${sysBase}"];
              };
            }
          ]
          ++ [(xinlib.buildVer self) (./. + "/hosts/${name}")]
          ++ [{nixpkgs.overlays = overlays;}];
      };
    lpkgs = unstable.legacyPackages.x86_64-linux;
    darwinPkgs = unstableSmall.legacyPackages.aarch64-darwin;
  in {
    darwinConfigurations = {
      plq = darwin.lib.darwinSystem {
        system = "aarch64-darwin";
        specialArgs = {inherit xinlib;};
        modules = [
          xin-secrets.nixosModules.sops
          ./overlays

          ./hosts/plq
        ];
      };
    };

    # Expose all of the overlays to unstable so we can test build
    # everything before deploying
    legacyPackages.x86_64-linux = import unstable {
      system = "x86_64-linux";
      overlays = let
        overlayFn = import ./overlays;
        stableList = overlayFn {
          isUnstable = true;
          inherit xinlib;
        };
        unstableList = overlayFn {
          isUnstable = false;
          inherit xinlib;
        };
      in
        [] ++ stableList.nixpkgs.overlays ++ unstableList.nixpkgs.overlays;
    };

    formatter.x86_64-linux = stable.legacyPackages.x86_64-linux.alejandra;
    formatter.aarch64-darwin = stable.legacyPackages.aarch64-darwin.alejandra;

    devShells.x86_64-linux.default = xinlib.buildShell lpkgs;
    devShells.aarch64-darwin.default = xinlib.buildShell darwinPkgs;

    nixosConfigurations = {
      europa = buildSys "x86_64-linux" unstable [
        nixos-hardware.nixosModules.framework
      ] "europa";
      pwntie = buildSys "x86_64-linux" stable [] "pwntie";
      stan = buildSys "x86_64-linux" unstable [] "stan";
      #weather = buildSys "aarch64-linux" stable
      #  [ nixos-hardware.nixosModules.raspberry-pi-4 ] "weather";

      faf = buildSys "x86_64-linux" stable [./configs/hardened.nix] "faf";
      box = buildSys "x86_64-linux" stable [./configs/hardened.nix] "box";
      #luna = buildSys "x86_64-linux" stable
      #  [ "${nixos-hardware}/common/cpu/intel" ] "luna";
      h = buildSys "x86_64-linux" stable [
        ./configs/hardened.nix
        gostart.nixosModule
        pots.nixosModule
        pr-status.nixosModule
      ] "h";
      #router =
      #  buildSys "x86_64-linux" stable [ ./configs/hardened.nix ] "router";

      arm64Install = stable.lib.nixosSystem {
        system = "aarch64-linux";

        modules = [
          (import ./installer.nix)
          xin-secrets.nixosModules.sops

          "${stable}/nixos/modules/installer/sd-card/sd-image-aarch64-installer.nix"
        ];
      };

      #weatherzero = buildSys "armv6l" stable [
      #  "${stable}/nixos/modules/installer/sd-card/sd-image-raspberrypi.nix"
      #  {
      #    nixpkgs = {
      #      buildPlatform = {
      #        system = "x86_64-linux";
      #        config = "x86_64-unknown-linux-gnu";
      #      };
      #      hostPlatform = {
      #        system = "armv6l-linux";
      #        config = "armv6l-unknown-linux-gnueabihf";
      #      };
      #    };
      #  }
      #] "weatherzero";

      isoInstall = stable.lib.nixosSystem {
        system = "x86_64-linux";

        modules = [
          (xinlib.buildVer self)
          (import ./installer.nix)
          xin-secrets.nixosModules.sops

          "${stable}/nixos/modules/installer/cd-dvd/installation-cd-graphical-calamares-plasma5.nix"
        ];
      };
    };

    packages = forAllSystems (system: let
      upkgs = unstablePkgsFor.${system};
      spkgs = stablePkgsFor.${system};
    in {
      ada_language_server =
        spkgs.callPackage ./pkgs/ada_language_server.nix {inherit spkgs;};
      alire = spkgs.callPackage ./pkgs/alire.nix {inherit spkgs;};
      bearclaw = spkgs.callPackage ./pkgs/bearclaw.nix {inherit spkgs;};
      clilol = spkgs.callPackage ./pkgs/clilol.nix {inherit spkgs;};
      gqrss = spkgs.callPackage ./pkgs/gqrss.nix {
        inherit spkgs;
        isUnstable = true;
      };
      iamb = upkgs.callPackage ./pkgs/iamb.nix {};
      icbirc = spkgs.callPackage ./pkgs/icbirc.nix {
        inherit spkgs;
        isUnstable = true;
      };
      femtolisp = upkgs.callPackage ./pkgs/femtolisp.nix {};
      fyne = upkgs.callPackage ./pkgs/fyne.nix {inherit upkgs;};
      flake-warn =
        spkgs.callPackage ./pkgs/flake-warn.nix {inherit spkgs;};
      #kurinto = spkgs.callPackage ./pkgs/kurinto.nix {};
      mcchunkie = spkgs.callPackage ./pkgs/mcchunkie.nix {inherit spkgs;};
      yaegi = spkgs.callPackage ./pkgs/yaegi.nix {inherit spkgs;};
      gen-patches =
        spkgs.callPackage ./bins/gen-patches.nix {inherit spkgs;};
      yarr = spkgs.callPackage ./pkgs/yarr.nix {
        inherit spkgs;
        isUnstable = true;
      };
      precursorupdater = spkgs.python3Packages.callPackage ./pkgs/precursorupdater.nix {
        inherit spkgs;
      };
      kobuddy = upkgs.python3Packages.callPackage ./pkgs/kobuddy.nix {
        inherit upkgs;
      };
      ghexport = upkgs.python3Packages.callPackage ./pkgs/ghexport.nix {
        inherit upkgs;
      };
      hpi =
        upkgs.python3Packages.callPackage ./pkgs/hpi.nix {inherit upkgs;};
      promnesia = upkgs.python3Packages.callPackage ./pkgs/promnesia.nix {
        inherit upkgs;
      };
      sliding-sync =
        spkgs.callPackage ./pkgs/sliding-sync.nix {inherit spkgs;};
      golink = spkgs.callPackage ./pkgs/golink.nix {inherit spkgs;};
      gokrazy = upkgs.callPackage ./pkgs/gokrazy.nix {inherit upkgs;};
      gosignify = spkgs.callPackage ./pkgs/gosignify.nix {inherit spkgs;};
      gotosocial =
        spkgs.callPackage ./pkgs/gotosocial.nix {inherit spkgs;};
      zutty = upkgs.callPackage ./pkgs/zutty.nix {
        inherit upkgs;
      };
      mvoice = upkgs.callPackage ./pkgs/mvoice.nix {
        inherit upkgs;
      };
      inherit (xintray.packages.${system}) xintray;
      inherit (tsvnstat.packages.${system}) tsvnstat;
      inherit (pots.packages.${system}) pots;
      inherit (po.packages.${system}) po;
      inherit (tsRevProx.packages.${system}) ts-reverse-proxy;

      inherit (spkgs) matrix-synapse;
    });

    templates."ada" = {
      path = ./templates/ada;
      description = "Ada template.";
    };
    templates."go" = {
      path = ./templates/go;
      description = "Go template.";
    };
    templates."perl" = {
      path = ./templates/perl;
      description = "Perl template.";
    };
    templates."mojo" = {
      path = ./templates/mojo;
      description = "Perl MojoLicious template.";
    };
    templates."ocaml" = {
      path = ./templates/ocaml;
      description = "OCaml template.";
    };

    checks = let
      buildList = ["europa" "stan" "h" "box" "faf"];
    in
      with unstable.lib;
        foldl' recursiveUpdate {} (mapAttrsToList (name: system: {
            "${system.pkgs.stdenv.hostPlatform.system}"."${name}" =
              system.config.system.build.toplevel;
          }) (filterAttrs (n: _: (builtins.elem n buildList))
            self.nixosConfigurations));
  };
}