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let
lazyImport = path:
if (builtins.pathExists path)
then import path
else {};
mkIfNull = cond: onTrue:
if cond
then onTrue
else null;
getSubdirs = dir:
builtins.filter (x: x != null)
(builtins.attrValues
(builtins.mapAttrs
(name: value: mkIfNull (value == "directory") name)
(builtins.readDir dir)));
getSubfiles = dir:
builtins.filter (x: x != null)
(builtins.attrValues
(builtins.mapAttrs
(name: value: mkIfNull (value == "file") name)
(builtins.readDir dir)));
mkHomeImports = modName: [
(lazyImport ../../modules/${modName}/options.nix)
(lazyImport ../../modules/${modName}/home/default.nix)
];
mkSystemImports = modName: [
(lazyImport ../../modules/${modName}/options.nix)
(lazyImport ../../modules/${modName}/system/default.nix)
];
mkModules = mapFn: {
imports =
[../../modules/options.nix]
++ (builtins.foldl' (a: b: a ++ b) [] (builtins.map mapFn (getSubdirs ../../modules)));
};
mkHomeModules = mkModules mkHomeImports;
mkSystemModules = mkModules mkSystemImports;
mkHost = {
hostname,
namespace,
inputs,
...
}: let
preloadedConfig = import ../../hosts/${hostname}/config.nix {inherit inputs;};
username = preloadedConfig."${namespace}".user.name;
furnaceOptions = {lib, ...}: let
inherit (lib) mkOption types;
in {
options.nix-furnace = {
extraHomeModules = mkOption {
type = with types; listOf path;
default = [];
};
extraSystemModules = mkOption {
type = with types; listOf path;
default = [];
};
};
};
in
inputs.nixpkgs.lib.nixosSystem {
specialArgs = {inherit inputs;};
modules =
[
{networking.hostName = hostname;}
../../hosts/${hostname}/config.nix
mkSystemModules
furnaceOptions
# Home-manager
inputs.home-manager.nixosModules.home-manager
{
home-manager = {
backupFileExtension = "bak";
useGlobalPkgs = true;
useUserPackages = true;
extraSpecialArgs = {inherit inputs;};
users."${username}" = {
imports =
[
mkHomeModules
furnaceOptions
../../hosts/${hostname}/config.nix
]
++ preloadedConfig.nix-furnace.extraHomeModules;
};
};
}
]
++ preloadedConfig.nix-furnace.extraSystemModules;
};
mkFlake = {
namespace,
inputs,
...
}: {
nixosConfigurations =
builtins.listToAttrs
(builtins.map (hostname: {
name = hostname;
value = mkHost {inherit inputs hostname namespace;};
})
(getSubdirs ../../hosts));
};
in {
inherit mkFlake;
}
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