forked from clan/clan-core
Inventory: simplify build-clan interface
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2f8b782a1f
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b74590f381
@ -27,8 +27,50 @@ let
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exit 1
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fi
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'';
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# Each .nix file in the roles directory is a role
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# TODO: Helper function to set available roles within module meta.
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# roles = lib.pipe ./roles [
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# (p: if builtins.pathExists p then p else throw "Role directory does not exist")
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# builtins.readDir
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# (lib.filterAttrs (_n: v: v == "regular"))
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# lib.attrNames
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# (map (fileName: lib.removeSuffix ".nix" fileName))
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# ];
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# TODO: make this an interface of every module
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# Maybe load from readme.md
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metaInfoOption = lib.mkOption {
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readOnly = true;
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default = {
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description = "A category for the service. This is used to group services in the clan ui";
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};
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type = lib.types.submodule {
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options = {
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description = lib.mkOption {
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description = "A category for the service. This is used to group services in the clan ui";
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type = lib.types.str;
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};
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# icon = lib.mkOption {
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# description = "A category for the service. This is used to group services in the clan ui";
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# type = lib.types.str;
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# };
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# screenshots = lib.mkOption {
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# description = "A category for the service. This is used to group services in the clan ui";
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# type = lib.types.str;
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# };
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# category = lib.mkOption {
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# description = "A category for the service. This is used to group services in the clan ui";
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# type = lib.types.enum ["backup" "network"];
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# };
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};
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};
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};
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in
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{
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options.clan.borgbackup.meta = metaInfoOption;
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options.clan.borgbackup.destinations = lib.mkOption {
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type = lib.types.attrsOf (
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lib.types.submodule (
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@ -63,6 +105,11 @@ in
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};
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imports = [
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{
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config.clan.borgbackup.meta = {
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description = "backup";
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};
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}
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(lib.mkRemovedOptionModule [
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"clan"
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"borgbackup"
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@ -76,7 +123,7 @@ in
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lib.nameValuePair "borgbackup-job-${dest.name}" {
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# since borgbackup mounts the system read-only, we need to run in a ExecStartPre script, so we can generate additional files.
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serviceConfig.ExecStartPre = [
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(''+${pkgs.writeShellScript "borgbackup-job-${dest.name}-pre-backup-commands" preBackupScript}'')
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''+${pkgs.writeShellScript "borgbackup-job-${dest.name}-pre-backup-commands" preBackupScript}''
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];
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}
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) cfg.destinations;
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@ -4,22 +4,18 @@ let
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in
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{
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clan = clan-core.lib.buildClan {
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meta.name = "kenjis clan";
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# Should usually point to the directory of flake.nix
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directory = self;
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# service config
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# Useful alias: "inventory.services.borgbackup.default"
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inventory = {
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services = {
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borgbackup = {
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borgbackup.instance_1 = {
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roles.server.machines = [ "vyr_machine" ];
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roles.client.tags = [ "laptop" ];
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};
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};
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# merged with
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inventory = builtins.fromJSON (builtins.readFile ./src/tests/borgbackup.json);
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};
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# merged with
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machines = {
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@ -15,15 +15,6 @@
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# A map from arch to pkgs, if specified this nixpkgs will be only imported once for each system.
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# This improves performance, but all nipxkgs.* options will be ignored.
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pkgsForSystem ? (_system: null),
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/*
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Distributed services configuration.
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This configures a default instance in the inventory with the name "default".
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If you need multiple instances of a service configure them via:
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inventory.services.[serviceName].[instanceName] = ...
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*/
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services ? { },
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/*
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Low level inventory configuration.
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Overrides the services configuration.
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@ -44,15 +35,15 @@ let
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modules = [
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./interface.nix
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{ inherit meta; }
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# Default instances configured via 'services'
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{
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services = lib.mapAttrs (_name: value: {
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default = value // {
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meta.name = lib.mkDefault _name;
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};
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}) services;
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}
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# The inventory overrides
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(
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if
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builtins.pathExists "${directory}/inventory.json"
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# Is recursively applied. Any explicit nix will override.
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then
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lib.mkDefault (builtins.fromJSON (builtins.readFile "${directory}/inventory.json"))
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else
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{ }
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)
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inventory
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# Machines explicitly configured via 'machines' argument
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{
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@ -79,13 +70,17 @@ let
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}
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) machines;
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}
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# Machines that exist in the machines directory
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{ machines = lib.mapAttrs (name: _: { inherit name; }) machinesDirs; }
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# Deprecated interface
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(if clanName != null then { meta.name = clanName; } else { })
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(if clanIcon != null then { meta.icon = clanIcon; } else { })
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];
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}).config;
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buildInventory = import ./inventory.nix { inherit lib clan-core; };
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# map from machine name to service configuration
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# { ${machineName} :: Config }
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serviceConfigs = buildInventory mergedInventory;
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deprecationWarnings = [
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@ -95,62 +90,6 @@ let
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(lib.warnIf (clanIcon != null) "clanIcon is deprecated, please use meta.icon instead" null)
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];
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machinesDirs = lib.optionalAttrs (builtins.pathExists "${directory}/machines") (
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builtins.readDir (directory + /machines)
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);
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mergedMeta =
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let
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metaFromFile =
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if (builtins.pathExists "${directory}/clan/meta.json") then
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let
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settings = builtins.fromJSON (builtins.readFile "${directory}/clan/meta.json");
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in
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settings
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else
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{ };
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legacyMeta = lib.filterAttrs (_: v: v != null) {
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name = clanName;
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icon = clanIcon;
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};
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optionsMeta = lib.filterAttrs (_: v: v != null) meta;
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warnings =
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builtins.map (
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name:
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if
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metaFromFile.${name} or null != optionsMeta.${name} or null && optionsMeta.${name} or null != null
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then
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lib.warn "meta.${name} is set in different places. (exlicit option meta.${name} overrides ${directory}/clan/meta.json)" null
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else
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null
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) (builtins.attrNames metaFromFile)
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++ [ (if (res.name or null == null) then (throw "meta.name should be set") else null) ];
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res = metaFromFile // legacyMeta // optionsMeta;
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in
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# Print out warnings before returning the merged result
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builtins.deepSeq warnings res;
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machineSettings =
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machineName:
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# CLAN_MACHINE_SETTINGS_FILE allows to override the settings file temporarily
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# This is useful for doing a dry-run before writing changes into the settings.json
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# Using CLAN_MACHINE_SETTINGS_FILE requires passing --impure to nix eval
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if builtins.getEnv "CLAN_MACHINE_SETTINGS_FILE" != "" then
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builtins.fromJSON (builtins.readFile (builtins.getEnv "CLAN_MACHINE_SETTINGS_FILE"))
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else
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lib.optionalAttrs (builtins.pathExists "${directory}/machines/${machineName}/settings.json") (
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builtins.fromJSON (builtins.readFile (directory + /machines/${machineName}/settings.json))
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);
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# Read additional imports specified via a config option in settings.json
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# This is not an infinite recursion, because the imports are discovered here
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# before calling evalModules.
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# It is still useful to have the imports as an option, as this allows for type
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# checking and easy integration with the config frontend(s)
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machineImports =
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machineSettings: map (module: clan-core.clanModules.${module}) (machineSettings.clanImports or [ ]);
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# TODO: remove default system once we have a hardware-config mechanism
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nixosConfiguration =
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{
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@ -160,13 +99,7 @@ let
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extraConfig ? { },
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}:
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nixpkgs.lib.nixosSystem {
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modules =
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let
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settings = machineSettings name;
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in
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(machineImports settings)
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++ [
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settings
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modules = [
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clan-core.nixosModules.clanCore
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extraConfig
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(machines.${name} or { })
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@ -200,7 +133,7 @@ let
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} // specialArgs;
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};
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allMachines = machinesDirs // machines;
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allMachines = mergedInventory.machines or { };
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supportedSystems = [
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"x86_64-linux"
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@ -252,11 +185,11 @@ builtins.deepSeq deprecationWarnings {
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inherit nixosConfigurations;
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clanInternals = {
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# Evaluated clan meta
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# Merged /clan/meta.json with overrides from buildClan
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meta = mergedMeta;
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meta = mergedInventory.meta;
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inventory = mergedInventory;
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invFile = "${directory}/inventory.json";
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# machine specifics
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machines = configsPerSystem;
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machinesFunc = configsFuncPerSystem;
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