snowfield/default.nix

let
  inputs = import ./deps;
  patch = import inputs.nix-patches { patchFile = ./patches; };
  inputs_final = inputs // {
    nixpkgs_patched = patch.mkNixpkgsSrc {
      src = inputs.unstable;
      version = "nixos-unstable";
    };
  };
  lib = (import "${inputs.nixpkgs}/lib").extend (import ./lib inputs_final);
  mkLibForMachine =
    machine:
    (import "${lib.snowfield.${machine}.nixpkgs_version}/lib").extend (import ./lib inputs_final);
  machines_plats = lib.lists.unique (
    lib.mapAttrsToList (_name: value: value.arch) (
      lib.filterAttrs (_n: v: builtins.hasAttr "arch" v) lib.snowfield
    )
  );
  mkMachine = import ./lib/mkmachine.nix inputs_final lib;

  nixpkgs_plats = builtins.listToAttrs (
    builtins.map (plat: {
      name = plat;
      value = import inputs.nixpkgs { system = plat; };
    }) machines_plats
  );
in
rec {

  nixosModules = builtins.listToAttrs (
    map (x: {
      name = x;
      value = import (./modules + "/${x}");
    }) (builtins.attrNames (builtins.readDir ./modules))
  );

  nixosConfigurations = builtins.mapAttrs (
    name: value:
    (mkMachine {
      inherit name;
      host-config = value;
      modules = nixosModules;
      nixpkgs = lib.snowfield.${name}.nixpkgs_version;
      system = lib.snowfield.${name}.arch;
      home-manager = lib.snowfield.${name}.hm_version;
    })
  ) (lib.importConfig ./machines);

  colmena = {
    meta = {
      nodeNixpkgs = builtins.mapAttrs (
        n: _: import lib.luj.machines.${n}.nixpkgs_version
      ) nixosConfigurations;
      nodeSpecialArgs = builtins.mapAttrs (
        n: v: v._module.specialArgs // { lib = mkLibForMachine n; }
      ) nixosConfigurations;
    };
  } // builtins.mapAttrs (_: v: { imports = v._module.args.modules; }) nixosConfigurations;

  packages = builtins.listToAttrs (
    builtins.map (plat: {
      name = plat;
      value =
        lib.filterAttrs
          (
            _name: value:
            (
              !lib.hasAttrByPath [
                "meta"
                "platforms"
              ] value
            )
            || builtins.elem plat value.meta.platforms
          )
          (
            builtins.listToAttrs (
              builtins.map (e: {
                name = e;
                value = nixpkgs_plats.${plat}.callPackage (./packages + "/${e}") { };
              }) (builtins.attrNames (builtins.readDir ./packages))
            )
          );
    }) machines_plats
  );

  inherit (lib.luj) machines;

  checks = {
    inherit packages;
    machines = lib.mapAttrs (_: v: v.config.system.build.toplevel) nixosConfigurations;
  };
}