clanServices/wireguard: add networking exports to controllers

Part of https://git.clan.lol/clan/clan-core/issues/5549

clanServices/sshd/default.nix

@@ -39,6 +39,7 @@
             ...
           }:
           let
+            uniqueStrings = list: builtins.attrNames (builtins.groupBy lib.id list);
             # Collect searchDomains from all servers in this instance
             allServerSearchDomains = lib.flatten (
               lib.mapAttrsToList (_name: machineConfig: machineConfig.settings.certificate.searchDomains or [ ]) (
@@ -46,7 +47,7 @@
               )
             );
             # Merge client's searchDomains with all servers' searchDomains
-            searchDomains = lib.uniqueStrings (settings.certificate.searchDomains ++ allServerSearchDomains);
+            searchDomains = uniqueStrings (settings.certificate.searchDomains ++ allServerSearchDomains);
           in
           {
             clan.core.vars.generators.openssh-ca = lib.mkIf (searchDomains != [ ]) {

clanServices/wifi/tests/eval-tests.nix

@@ -41,14 +41,14 @@ let
   # In this case it is 'self-zerotier-redux'
   # This is usually only used internally, but we can use it to test the evaluation of service module in isolation
   # evaluatedService =
-  #   testFlake.clanInternals.inventoryClass.distributedServices.importedModulesEvaluated.self-zerotier-redux.config;
+  #   testFlake.clanInternals.inventoryClass.distributedServices.servicesEval.config.mappedServices.self-zerotier-redux.config;
 in
 {
   test_simple = {
     inherit testFlake;
 
     expr =
-      testFlake.config.clan.clanInternals.inventoryClass.distributedServices.importedModulesEvaluated.self-wifi.config;
+      testFlake.config.clan.clanInternals.inventoryClass.distributedServices.servicesEval.config.mappedServices.self-wifi.config;
     expected = 1;
 
     # expr = {

clanServices/wireguard/default.nix

@@ -56,6 +56,8 @@
 
 {
   clanLib,
+  lib,
+  directory,
   ...
 }:
 let
@@ -298,6 +300,18 @@ in
         ...
       }:
       {
+        exports.networking = {
+          peers = lib.mapAttrs (name: _machine: {
+            host.plain =
+              clanLib.vars.getPublicValue {
+                flake = directory;
+                machine = name;
+                generator = "wireguard-network-${instanceName}";
+                file = "prefix";
+              }
+              + "::1";
+          }) roles.controller.machines;
+        };
 
         # Controllers connect to all peers and other controllers
         nixosModule =

clanServices/zerotier/default.nix

@@ -140,6 +140,9 @@
             pkgs,
             ...
           }:
+          let
+            uniqueStrings = list: builtins.attrNames (builtins.groupBy lib.id list);
+          in
           {
             imports = [
               (import ./shared.nix {
@@ -156,7 +159,7 @@
             config = {
               systemd.services.zerotier-inventory-autoaccept =
                 let
-                  machines = lib.uniqueStrings (
+                  machines = uniqueStrings (
                     (lib.optionals (roles ? moon) (lib.attrNames roles.moon.machines))
                     ++ (lib.optionals (roles ? controller) (lib.attrNames roles.controller.machines))
                     ++ (lib.optionals (roles ? peer) (lib.attrNames roles.peer.machines))

devFlake/flake.lock

@@ -105,11 +105,11 @@
     },
     "nixpkgs-dev": {
       "locked": {
-        "lastModified": 1761631514,
+        "lastModified": 1761853358,
-        "narHash": "sha256-VsXz+2W4DFBozzppbF9SXD9pNcv17Z+c/lYXvPJi/eI=",
+        "narHash": "sha256-1tBdsBzYJOzVzNOmCFzFMWHw7UUbhkhiYCFGr+OjPTs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "a0b0d4b52b5f375658ca8371dc49bff171dbda91",
+        "rev": "262333bca9b49964f8e3cad3af655466597c01d4",
         "type": "github"
       },
       "original": {
@@ -128,11 +128,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1760652422,
+        "lastModified": 1761730856,
-        "narHash": "sha256-C88Pgz38QIl9JxQceexqL2G7sw9vodHWx1Uaq+NRJrw=",
+        "narHash": "sha256-t1i5p/vSWwueZSC0Z2BImxx3BjoUDNKyC2mk24krcMY=",
         "owner": "NuschtOS",
         "repo": "search",
-        "rev": "3ebeebe8b6a49dfb11f771f761e0310f7c48d726",
+        "rev": "e29de6db0cb3182e9aee75a3b1fd1919d995d85b",
         "type": "github"
       },
       "original": {

flake.lock

@@ -31,11 +31,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1760701190,
+        "lastModified": 1761899396,
-        "narHash": "sha256-y7UhnWlER8r776JsySqsbTUh2Txf7K30smfHlqdaIQw=",
+        "narHash": "sha256-XOpKBp6HLzzMCbzW50TEuXN35zN5WGQREC7n34DcNMM=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "3a9450b26e69dcb6f8de6e2b07b3fc1c288d85f5",
+        "rev": "6f4cf5abbe318e4cd1e879506f6eeafd83f7b998",
         "type": "github"
       },
       "original": {

lib/inventory/default.nix

@@ -2,11 +2,7 @@
   lib,
   clanLib,
 }:
-let
-  services = clanLib.callLib ./distributed-service/inventory-adapter.nix { };
-in
 {
-  inherit (services) mapInstances;
   inventoryModule = {
     _file = "clanLib.inventory.module";
     imports = [

lib/inventory/distributed-service/all-services-wrapper.nix

@@ -28,19 +28,15 @@ in
         elemType = submoduleWith {
           class = "clan.service";
           specialArgs = {
-            exports = config.exports;
             directory = directory;
             clanLib = specialArgs.clanLib;
+            exports = config.exports;
           };
           modules = [
             (
               { name, ... }:
               {
                 _module.args._ctx = [ name ];
-                _module.args.clanLib = specialArgs.clanLib;
-                _module.args.exports = config.exports;
-                _module.args.directory = directory;
-
               }
             )
             ./service-module.nix

lib/inventory/distributed-service/inventory-adapter.nix

@@ -1,171 +0,0 @@
-# Adapter function between the inventory.instances and the clan.service module
-#
-# Data flow:
-# - inventory.instances -> Adapter -> clan.service module -> Service Resources (i.e. NixosModules per Machine, Vars per Service, etc.)
-#
-# What this file does:
-#
-# - Resolves the [Module] to an actual module-path and imports it.
-# - Groups together all the same modules into a single import and creates all instances for it.
-# - Resolves the inventory tags into machines. Tags don't exist at the service level.
-#   Also combines the settings for 'machines' and 'tags'.
-{
-  lib,
-  clanLib,
-  ...
-}:
-{
-  mapInstances =
-    {
-      # This is used to resolve the module imports from 'flake.inputs'
-      flakeInputs,
-      # The clan inventory
-      inventory,
-      directory,
-      clanCoreModules,
-      prefix ? [ ],
-      exportsModule,
-    }:
-    let
-      # machineHasTag = machineName: tagName: lib.elem tagName inventory.machines.${machineName}.tags;
-
-      # map the instances into the module
-      importedModuleWithInstances = lib.mapAttrs (
-        instanceName: instance:
-        let
-          resolvedModule = clanLib.resolveModule {
-            moduleSpec = instance.module;
-            inherit flakeInputs clanCoreModules;
-          };
-
-          # Every instance includes machines via roles
-          # :: { client :: ... }
-          instanceRoles = lib.mapAttrs (
-            roleName: role:
-            let
-              resolvedMachines = clanLib.inventory.resolveTags {
-                members = {
-                  # Explicit members
-                  machines = lib.attrNames role.machines;
-                  # Resolved Members
-                  tags = lib.attrNames role.tags;
-                };
-                inherit (inventory) machines;
-                inherit instanceName roleName;
-              };
-            in
-            # instances.<instanceName>.roles.<roleName> =
-            # Remove "tags", they are resolved into "machines"
-            (removeAttrs role [ "tags" ])
-            // {
-              machines = lib.genAttrs resolvedMachines.machines (
-                machineName:
-                let
-                  machineSettings = instance.roles.${roleName}.machines.${machineName}.settings or { };
-                in
-                # TODO: tag settings
-                # Wait for this feature until option introspection for 'settings' is done.
-                # This might get too complex to handle otherwise.
-                # settingsViaTags = lib.filterAttrs (
-                #   tagName: _: machineHasTag machineName tagName
-                # ) instance.roles.${roleName}.tags;
-                {
-                  # TODO: Do we want to wrap settings with
-                  # setDefaultModuleLocation "inventory.instances.${instanceName}.roles.${roleName}.tags.${tagName}";
-                  settings = {
-                    imports = [
-                      machineSettings
-                    ]; # ++ lib.attrValues (lib.mapAttrs (_tagName: v: v.settings) settingsViaTags);
-                  };
-                }
-              );
-            }
-          ) instance.roles;
-        in
-        {
-          inherit (instance) module;
-          inherit resolvedModule instanceRoles;
-        }
-      ) inventory.instances or { };
-
-      # Group the instances by the module they resolve to
-      # This is necessary to evaluate the module in a single pass
-      # :: { <module.input>_<module.name> :: [ { name, value } ] }
-      # Since 'perMachine' needs access to all the instances we should include them as a whole
-      grouped = lib.foldlAttrs (
-        acc: instanceName: instance:
-        let
-          inputName = if instance.module.input == null then "<clan-core>" else instance.module.input;
-          id = inputName + "-" + instance.module.name;
-        in
-        acc
-        // {
-          ${id} = acc.${id} or [ ] ++ [
-            {
-              inherit instanceName instance;
-            }
-          ];
-        }
-      ) { } importedModuleWithInstances;
-
-      # servicesEval.config.mappedServices.self-A.result.final.jon.nixosModule
-      allMachines = lib.mapAttrs (machineName: _: {
-        # This is the list of nixosModules for each machine
-        machineImports = lib.foldlAttrs (
-          acc: _module_ident: serviceModule:
-          acc ++ [ serviceModule.result.final.${machineName}.nixosModule or { } ]
-        ) [ ] servicesEval.config.mappedServices;
-      }) inventory.machines or { };
-
-      evalServices =
-        { modules, prefix }:
-        lib.evalModules {
-          class = "clan";
-          specialArgs = {
-            inherit clanLib;
-            _ctx = prefix;
-          };
-          modules = [
-            (import ./all-services-wrapper.nix { inherit directory; })
-          ]
-          ++ modules;
-        };
-
-      servicesEval = evalServices {
-        inherit prefix;
-        modules = [
-          {
-            inherit exportsModule;
-            mappedServices = lib.mapAttrs (_module_ident: instances: {
-              imports = [
-                # Import the resolved module.
-                # i.e. clan.modules.admin
-                {
-                  options.module = lib.mkOption {
-                    type = lib.types.raw;
-                    default = (builtins.head instances).instance.module;
-                  };
-                }
-                (builtins.head instances).instance.resolvedModule
-              ] # Include all the instances that correlate to the resolved module
-              ++ (builtins.map (v: {
-                instances.${v.instanceName}.roles = v.instance.instanceRoles;
-              }) instances);
-            }) grouped;
-          }
-        ];
-      };
-      importedModulesEvaluated = servicesEval.config.mappedServices;
-
-    in
-    {
-      inherit
-        servicesEval
-        importedModuleWithInstances
-        # Exposed for testing
-        grouped
-        allMachines
-        importedModulesEvaluated
-        ;
-    };
-}

lib/inventory/distributed-service/service-module.nix

@@ -7,10 +7,14 @@
   ...
 }:
 let
-  inherit (lib) mkOption types uniqueStrings;
+  inherit (lib) mkOption types;
   inherit (types) attrsWith submoduleWith;
 
   errorContext = "Error context: ${lib.concatStringsSep "." _ctx}";
+  # TODO:
+  # Remove once this gets merged upstream; performs in O(n*log(n) instead of O(n^2))
+  # https://github.com/NixOS/nixpkgs/pull/355616/files
+  uniqueStrings = list: builtins.attrNames (builtins.groupBy lib.id list);
   /**
     Merges the role- and machine-settings using the role interface
 

lib/inventory/distributed-service/tests/default.nix

@@ -4,36 +4,8 @@
   ...
 }:
 let
-  inherit (lib)
-    evalModules
-    ;
 
-  evalInventory =
-    m:
-    (evalModules {
-      # Static modules
-      modules = [
-        clanLib.inventory.inventoryModule
-        {
-          _file = "test file";
-          tags.all = [ ];
-          tags.nixos = [ ];
-          tags.darwin = [ ];
-        }
-        {
-          modules.test = { };
-        }
-        m
-      ];
-    }).config;
-
-  callInventoryAdapter =
-    inventoryModule:
-    let
-      inventory = evalInventory inventoryModule;
   flakeInputsFixture = {
-        self.clan.modules = inventoryModule.modules or { };
-        # Example upstream module
     upstream.clan.modules = {
       uzzi = {
         _class = "clan.service";
@@ -43,24 +15,42 @@ let
       };
     };
   };
-    in
+
-    clanLib.inventory.mapInstances {
+  createTestClan =
-      directory = ./.;
+    testClan:
-      clanCoreModules = { };
+    let
-      flakeInputs = flakeInputsFixture;
+      res = clanLib.clan ({
-      inherit inventory;
+        # Static / mocked
-      exportsModule = { };
+        specialArgs = {
+          clan-core = {
+            clan.modules = { };
           };
+        };
+        self.inputs = flakeInputsFixture // {
+          self.clan = res.config;
+        };
+        directory = ./.;
+        exportsModule = { };
+
+        imports = [
+          testClan
+        ];
+      });
+    in
+    res;
+
 in
 {
   extraModules = import ./extraModules.nix { inherit clanLib; };
   exports = import ./exports.nix { inherit lib clanLib; };
-  settings = import ./settings.nix { inherit lib callInventoryAdapter; };
+  settings = import ./settings.nix { inherit lib createTestClan; };
-  specialArgs = import ./specialArgs.nix { inherit lib callInventoryAdapter; };
+  specialArgs = import ./specialArgs.nix { inherit lib createTestClan; };
-  resolve_module_spec = import ./import_module_spec.nix { inherit lib callInventoryAdapter; };
+  resolve_module_spec = import ./import_module_spec.nix {
+    inherit lib createTestClan;
+  };
   test_simple =
     let
-      res = callInventoryAdapter {
+      res = createTestClan {
         # Authored module
         # A minimal module looks like this
         # It isn't exactly doing anything but it's a valid module that produces an output
@@ -71,7 +61,7 @@ in
           };
         };
         # User config
-        instances."instance_foo" = {
+        inventory.instances."instance_foo" = {
           module = {
             name = "simple-module";
           };
@@ -81,7 +71,7 @@ in
     {
       # Test that the module is mapped into the output
       # We might change the attribute name in the future
-      expr = res.importedModulesEvaluated ? "<clan-core>-simple-module";
+      expr = res.config._services.mappedServices ? "<clan-core>-simple-module";
       expected = true;
       inherit res;
     };
@@ -92,7 +82,7 @@ in
   # All instances should be included within one evaluation to make all of them available
   test_module_grouping =
     let
-      res = callInventoryAdapter {
+      res = createTestClan {
         # Authored module
         # A minimal module looks like this
         # It isn't exactly doing anything but it's a valid module that produces an output
@@ -112,18 +102,19 @@ in
 
           perMachine = { }: { };
         };
+
         # User config
-        instances."instance_foo" = {
+        inventory.instances."instance_foo" = {
           module = {
             name = "A";
           };
         };
-        instances."instance_bar" = {
+        inventory.instances."instance_bar" = {
           module = {
             name = "B";
           };
         };
-        instances."instance_baz" = {
+        inventory.instances."instance_baz" = {
           module = {
             name = "A";
           };
@@ -133,16 +124,16 @@ in
     {
       # Test that the module is mapped into the output
       # We might change the attribute name in the future
-      expr = lib.mapAttrs (_n: v: builtins.length v) res.grouped;
+      expr = lib.attrNames res.config._services.mappedServices;
-      expected = {
+      expected = [
-        "<clan-core>-A" = 2;
+        "<clan-core>-A"
-        "<clan-core>-B" = 1;
+        "<clan-core>-B"
-      };
+      ];
     };
 
   test_creates_all_instances =
     let
-      res = callInventoryAdapter {
+      res = createTestClan {
         # Authored module
         # A minimal module looks like this
         # It isn't exactly doing anything but it's a valid module that produces an output
@@ -154,6 +145,7 @@ in
 
           perMachine = { }: { };
         };
+        inventory = {
           instances."instance_foo" = {
             module = {
               name = "A";
@@ -173,11 +165,12 @@ in
             };
           };
         };
+      };
     in
     {
       # Test that the module is mapped into the output
       # We might change the attribute name in the future
-      expr = lib.attrNames res.importedModulesEvaluated.self-A.instances;
+      expr = lib.attrNames res.config._services.mappedServices.self-A.instances;
       expected = [
         "instance_bar"
         "instance_foo"
@@ -187,7 +180,7 @@ in
   # Membership via roles
   test_add_machines_directly =
     let
-      res = callInventoryAdapter {
+      res = createTestClan {
         # Authored module
         # A minimal module looks like this
         # It isn't exactly doing anything but it's a valid module that produces an output
@@ -202,6 +195,7 @@ in
 
           # perMachine = {}: {};
         };
+        inventory = {
           machines = {
             jon = { };
             sara = { };
@@ -229,11 +223,12 @@ in
             roles.peer.tags.all = { };
           };
         };
+      };
     in
     {
       # Test that the module is mapped into the output
       # We might change the attribute name in the future
-      expr = lib.attrNames res.importedModulesEvaluated.self-A.result.allMachines;
+      expr = lib.attrNames res.config._services.mappedServices.self-A.result.allMachines;
       expected = [
         "jon"
         "sara"
@@ -243,7 +238,7 @@ in
   # Membership via tags
   test_add_machines_via_tags =
     let
-      res = callInventoryAdapter {
+      res = createTestClan {
         # Authored module
         # A minimal module looks like this
         # It isn't exactly doing anything but it's a valid module that produces an output
@@ -257,6 +252,7 @@ in
 
           # perMachine = {}: {};
         };
+        inventory = {
           machines = {
             jon = {
               tags = [ "foo" ];
@@ -281,11 +277,12 @@ in
             roles.peer.tags.all = { };
           };
         };
+      };
     in
     {
       # Test that the module is mapped into the output
       # We might change the attribute name in the future
-      expr = lib.attrNames res.importedModulesEvaluated.self-A.result.allMachines;
+      expr = lib.attrNames res.config._services.mappedServices.self-A.result.allMachines;
       expected = [
         "jon"
         "sara"
@@ -293,6 +290,9 @@ in
     };
 
   machine_imports = import ./machine_imports.nix { inherit lib clanLib; };
-  per_machine_args = import ./per_machine_args.nix { inherit lib callInventoryAdapter; };
+  per_machine_args = import ./per_machine_args.nix { inherit lib createTestClan; };
-  per_instance_args = import ./per_instance_args.nix { inherit lib callInventoryAdapter; };
+  per_instance_args = import ./per_instance_args.nix {
+    inherit lib;
+    callInventoryAdapter = createTestClan;
+  };
 }

lib/inventory/distributed-service/tests/import_module_spec.nix

@@ -1,4 +1,4 @@
-{ callInventoryAdapter, ... }:
+{ createTestClan, ... }:
 let
   # Authored module
   # A minimal module looks like this
@@ -23,12 +23,15 @@ let
 
   resolve =
     spec:
-    callInventoryAdapter {
+    createTestClan {
-      inherit modules machines;
+      inherit modules;
+      inventory = {
+        inherit machines;
         instances."instance_foo" = {
           module = spec;
         };
       };
+    };
 in
 {
   test_import_local_module_by_name = {
@@ -36,25 +39,16 @@ in
       (resolve {
         name = "A";
         input = "self";
-      }).importedModuleWithInstances.instance_foo.resolvedModule;
+      }).config._services.mappedServices.self-A.manifest.name;
-    expected = {
+    expected = "network";
-      _class = "clan.service";
-      manifest = {
-        name = "network";
-      };
-    };
   };
   test_import_remote_module_by_name = {
     expr =
       (resolve {
         name = "uzzi";
         input = "upstream";
-      }).importedModuleWithInstances.instance_foo.resolvedModule;
+      }).config._services.mappedServices.upstream-uzzi.manifest.name;
-    expected = {
+    expected = "uzzi-from-upstream";
-      _class = "clan.service";
+
-      manifest = {
-        name = "uzzi-from-upstream";
-      };
-    };
   };
 }

lib/inventory/distributed-service/tests/per_instance_args.nix

@@ -58,7 +58,10 @@ let
     sara = { };
   };
   res = callInventoryAdapter {
-    inherit modules machines;
+    inherit modules;
+
+    inventory = {
+      inherit machines;
       instances."instance_foo" = {
         module = {
           name = "A";
@@ -93,6 +96,7 @@ let
         roles.peer.tags.all = { };
       };
     };
+  };
 
   /*
     1 { imports = [ { instanceName = "instance_foo"; machine = { name = "jon"; roles = [ "controller" "pe 1 null
@@ -105,9 +109,10 @@ in
 {
   # settings should evaluate
   test_per_instance_arguments = {
+    inherit res;
     expr = {
       instanceName =
-        res.importedModulesEvaluated.self-A.result.allRoles.peer.allInstances."instance_foo".allMachines.jon.passthru.instanceName;
+        res.config._services.mappedServices.self-A.result.allRoles.peer.allInstances."instance_foo".allMachines.jon.passthru.instanceName;
 
       # settings are specific.
       # Below we access:
@@ -115,11 +120,11 @@ in
       # roles = peer
       # machines = jon
       settings =
-        res.importedModulesEvaluated.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.settings;
+        res.config._services.mappedServices.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.settings;
       machine =
-        res.importedModulesEvaluated.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.machine;
+        res.config._services.mappedServices.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.machine;
       roles =
-        res.importedModulesEvaluated.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.roles;
+        res.config._services.mappedServices.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.roles;
     };
     expected = {
       instanceName = "instance_foo";
@@ -160,9 +165,9 @@ in
 
   # TODO: Cannot be tested like this anymore
   test_per_instance_settings_vendoring = {
-    x = res.importedModulesEvaluated.self-A;
+    x = res.config._services.mappedServices.self-A;
     expr =
-      res.importedModulesEvaluated.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.vendoredSettings;
+      res.config._services.mappedServices.self-A.result.allRoles.peer.allInstances.instance_foo.allMachines.jon.passthru.vendoredSettings;
     expected = {
       timeout = "config.thing";
     };

lib/inventory/distributed-service/tests/per_machine_args.nix

@@ -1,4 +1,4 @@
-{ lib, callInventoryAdapter }:
+{ lib, createTestClan }:
 let
   # Authored module
   # A minimal module looks like this
@@ -39,8 +39,11 @@ let
     jon = { };
     sara = { };
   };
-  res = callInventoryAdapter {
+  res = createTestClan {
-    inherit modules machines;
+    inherit modules;
+    inventory = {
+
+      inherit machines;
       instances."instance_foo" = {
         module = {
           name = "A";
@@ -70,6 +73,7 @@ let
         roles.peer.tags.all = { };
       };
     };
+  };
 in
 
 {
@@ -79,7 +83,7 @@ in
     inherit res;
     expr = {
       hasMachineSettings =
-        res.importedModulesEvaluated.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer.machines.jon
+        res.config._services.mappedServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer.machines.jon
         ? settings;
 
       # settings are specific.
@@ -88,10 +92,10 @@ in
       # roles = peer
       # machines = jon
       specificMachineSettings =
-        res.importedModulesEvaluated.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer.machines.jon.settings;
+        res.config._services.mappedServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer.machines.jon.settings;
 
       hasRoleSettings =
-        res.importedModulesEvaluated.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer
+        res.config._services.mappedServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer
         ? settings;
 
       # settings are specific.
@@ -100,7 +104,7 @@ in
       # roles = peer
       # machines = *
       specificRoleSettings =
-        res.importedModulesEvaluated.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer;
+        res.config._services.mappedServices.self-A.result.allMachines.jon.passthru.instances.instance_foo.roles.peer;
     };
     expected = {
       hasMachineSettings = true;

lib/inventory/distributed-service/tests/settings.nix

@@ -1,6 +1,6 @@
-{ callInventoryAdapter, lib, ... }:
+{ createTestClan, lib, ... }:
 let
-  res = callInventoryAdapter {
+  res = createTestClan {
     modules."A" = {
       _class = "clan.service";
       manifest = {
@@ -21,6 +21,8 @@ let
           };
         };
     };
+    inventory = {
+
       machines = {
         jon = { };
         sara = { };
@@ -41,8 +43,9 @@ let
         roles.peer.machines.sara = { };
       };
     };
+  };
 
-  config = res.servicesEval.config.mappedServices.self-A;
+  config = res.config._services.mappedServices.self-A;
 
   #
   applySettings =

lib/inventory/distributed-service/tests/specialArgs.nix

@@ -1,6 +1,6 @@
-{ callInventoryAdapter, lib, ... }:
+{ createTestClan, lib, ... }:
 let
-  res = callInventoryAdapter {
+  res = createTestClan {
     modules."A" = m: {
       _class = "clan.service";
       config = {
@@ -14,6 +14,7 @@ let
         default = m;
       };
     };
+    inventory = {
       machines = {
         jon = { };
       };
@@ -25,8 +26,9 @@ let
         roles.peer.machines.jon = { };
       };
     };
+  };
 
-  specialArgs = lib.attrNames res.servicesEval.config.mappedServices.self-A.test.specialArgs;
+  specialArgs = lib.attrNames res.config._services.mappedServices.self-A.test.specialArgs;
 in
 {
   test_simple = {

modules/clan/default.nix

@@ -19,6 +19,7 @@
   imports = [
     ./top-level-interface.nix
     ./module.nix
+    ./distributed-services.nix
     ./checks.nix
   ];
 }

modules/clan/distributed-services.nix

@@ -0,0 +1,163 @@
+{
+  lib,
+  clanLib,
+  config,
+  clan-core,
+  ...
+}:
+let
+  inherit (lib) mkOption types;
+  # Keep a reference to top-level
+  clanConfig = config;
+
+  inventory = clanConfig.inventory;
+  flakeInputs = clanConfig.self.inputs;
+  clanCoreModules = clan-core.clan.modules;
+
+  grouped = lib.foldlAttrs (
+    acc: instanceName: instance:
+    let
+      inputName = if instance.module.input == null then "<clan-core>" else instance.module.input;
+      id = inputName + "-" + instance.module.name;
+    in
+    acc
+    // {
+      ${id} = acc.${id} or [ ] ++ [
+        {
+          inherit instanceName instance;
+        }
+      ];
+    }
+  ) { } importedModuleWithInstances;
+
+  importedModuleWithInstances = lib.mapAttrs (
+    instanceName: instance:
+    let
+      resolvedModule = clanLib.resolveModule {
+        moduleSpec = instance.module;
+        inherit flakeInputs clanCoreModules;
+      };
+
+      # Every instance includes machines via roles
+      # :: { client :: ... }
+      instanceRoles = lib.mapAttrs (
+        roleName: role:
+        let
+          resolvedMachines = clanLib.inventory.resolveTags {
+            members = {
+              # Explicit members
+              machines = lib.attrNames role.machines;
+              # Resolved Members
+              tags = lib.attrNames role.tags;
+            };
+            inherit (inventory) machines;
+            inherit instanceName roleName;
+          };
+        in
+        # instances.<instanceName>.roles.<roleName> =
+        # Remove "tags", they are resolved into "machines"
+        (removeAttrs role [ "tags" ])
+        // {
+          machines = lib.genAttrs resolvedMachines.machines (
+            machineName:
+            let
+              machineSettings = instance.roles.${roleName}.machines.${machineName}.settings or { };
+            in
+            # TODO: tag settings
+            # Wait for this feature until option introspection for 'settings' is done.
+            # This might get too complex to handle otherwise.
+            # settingsViaTags = lib.filterAttrs (
+            #   tagName: _: machineHasTag machineName tagName
+            # ) instance.roles.${roleName}.tags;
+            {
+              # TODO: Do we want to wrap settings with
+              # setDefaultModuleLocation "inventory.instances.${instanceName}.roles.${roleName}.tags.${tagName}";
+              settings = {
+                imports = [
+                  machineSettings
+                ]; # ++ lib.attrValues (lib.mapAttrs (_tagName: v: v.settings) settingsViaTags);
+              };
+            }
+          );
+        }
+      ) instance.roles;
+    in
+    {
+      inherit (instance) module;
+      inherit resolvedModule instanceRoles;
+    }
+  ) inventory.instances or { };
+in
+{
+  _class = "clan";
+  options._services = mkOption {
+    visible = false;
+    description = ''
+      All service instances
+
+      !!! Danger "Internal API"
+        Do not rely on this API yet.
+
+        - Will be renamed to just 'services' in the future.
+        Once the name can be claimed again.
+        - Structure will change.
+
+        API will be declared as public after beeing simplified.
+    '';
+    type = types.submoduleWith {
+      # TODO: Remove specialArgs
+      specialArgs = {
+        inherit clanLib;
+      };
+      modules = [
+        (import ../../lib/inventory/distributed-service/all-services-wrapper.nix {
+          inherit (clanConfig) directory;
+        })
+        # Dependencies
+        {
+          exportsModule = clanConfig.exportsModule;
+        }
+        {
+          # TODO: Rename to "allServices"
+          # All services
+          mappedServices = lib.mapAttrs (_module_ident: instances: {
+            imports = [
+              # Import the resolved module.
+              # i.e. clan.modules.admin
+              {
+                options.module = lib.mkOption {
+                  type = lib.types.raw;
+                  default = (builtins.head instances).instance.module;
+                };
+              }
+              (builtins.head instances).instance.resolvedModule
+            ] # Include all the instances that correlate to the resolved module
+            ++ (builtins.map (v: {
+              instances.${v.instanceName}.roles = v.instance.instanceRoles;
+            }) instances);
+          }) grouped;
+        }
+      ];
+    };
+    default = { };
+  };
+  options._allMachines = mkOption {
+    internal = true;
+    type = types.raw;
+    default = lib.mapAttrs (machineName: _: {
+      # This is the list of nixosModules for each machine
+      machineImports = lib.foldlAttrs (
+        acc: _module_ident: serviceModule:
+        acc ++ [ serviceModule.result.final.${machineName}.nixosModule or { } ]
+      ) [ ] config._services.mappedServices;
+    }) inventory.machines or { };
+  };
+
+  config = {
+    clanInternals.inventoryClass.machines = config._allMachines;
+    # clanInternals.inventoryClass.distributedServices = config._services;
+
+    # Exports from distributed services
+    exports = config._services.exports;
+  };
+}

modules/clan/eval-docs.nix

@@ -3,12 +3,16 @@
   lib,
   clanModule,
   clanLib,
+  clan-core,
 }:
 let
   eval = lib.evalModules {
     modules = [
       clanModule
     ];
+    specialArgs = {
+      self = clan-core;
+    };
   };
 
   evalDocs = pkgs.nixosOptionsDoc {

modules/clan/flake-module.nix

@@ -12,6 +12,7 @@ in
     }:
     let
       jsonDocs = import ./eval-docs.nix {
+        clan-core = self;
         inherit
           pkgs
           lib

modules/clan/module.nix

@@ -219,8 +219,6 @@ in
     inherit nixosConfigurations;
     inherit darwinConfigurations;
 
-    exports = config.clanInternals.inventoryClass.distributedServices.servicesEval.config.exports;
-
     clanInternals = {
       inventoryClass =
         let
@@ -254,21 +252,9 @@ in
               exportsModule = config.exportsModule;
             }
             (
-              { config, ... }:
+              { ... }:
               {
                 staticModules = clan-core.clan.modules;
-
-                distributedServices = clanLib.inventory.mapInstances {
-                  inherit (config)
-                    inventory
-                    directory
-                    flakeInputs
-                    exportsModule
-                    ;
-                  clanCoreModules = clan-core.clan.modules;
-                  prefix = [ "distributedServices" ];
-                };
-                machines = config.distributedServices.allMachines;
               }
             )
           ];

modules/inventoryClass/default.nix

@@ -67,9 +67,6 @@ in
       type = types.raw;
     };
 
-    distributedServices = mkOption {
-      type = types.raw;
-    };
     inventory = mkOption {
       type = types.raw;
     };

pkgs/docs-from-code/flake-module.nix

@@ -64,6 +64,9 @@
           '';
     in
     {
+      legacyPackages = {
+        inherit jsonDocs clanModulesViaService;
+      };
       packages = {
         inherit module-docs;
       };

pkgs/option-search/flake-module.nix

@@ -11,151 +11,10 @@
       ...
     }:
     let
-      inherit (lib)
-        mapAttrsToList
-        mapAttrs
-        mkOption
-        types
-        splitString
-        stringLength
-        substring
-        ;
-      inherit (self) clanLib;
-
-      serviceModules = self.clan.modules;
 
       baseHref = "/option-search/";
 
-      getRoles =
-        module:
-        (clanLib.evalService {
-          modules = [ module ];
-          prefix = [ ];
-        }).config.roles;
-
-      getManifest =
-        module:
-        (clanLib.evalService {
-          modules = [ module ];
-          prefix = [ ];
-        }).config.manifest;
-
-      settingsModules = module: mapAttrs (_roleName: roleConfig: roleConfig.interface) (getRoles module);
-
       # Map each letter to its capitalized version
-      capitalizeChar =
-        char:
-        {
-          a = "A";
-          b = "B";
-          c = "C";
-          d = "D";
-          e = "E";
-          f = "F";
-          g = "G";
-          h = "H";
-          i = "I";
-          j = "J";
-          k = "K";
-          l = "L";
-          m = "M";
-          n = "N";
-          o = "O";
-          p = "P";
-          q = "Q";
-          r = "R";
-          s = "S";
-          t = "T";
-          u = "U";
-          v = "V";
-          w = "W";
-          x = "X";
-          y = "Y";
-          z = "Z";
-        }
-        .${char};
-
-      title =
-        name:
-        let
-          # split by -
-          parts = splitString "-" name;
-          # capitalize first letter of each part
-          capitalize = part: (capitalizeChar (substring 0 1 part)) + substring 1 (stringLength part) part;
-          capitalizedParts = map capitalize parts;
-        in
-        builtins.concatStringsSep " " capitalizedParts;
-
-      fakeInstanceOptions =
-        name: module:
-        let
-          manifest = getManifest module;
-          description = ''
-            # ${title name} (Clan Service)
-
-            **${manifest.description}**
-
-            ${lib.optionalString (manifest ? readme) manifest.readme}
-
-            ${
-              if manifest.categories != [ ] then
-                "Categories: " + builtins.concatStringsSep ", " manifest.categories
-              else
-                "No categories defined"
-            }
-
-          '';
-        in
-        {
-          options = {
-            instances.${name} = lib.mkOption {
-              inherit description;
-              type = types.submodule {
-                options.roles = mapAttrs (
-                  roleName: roleSettingsModule:
-                  mkOption {
-                    type = types.submodule {
-                      _file = "docs flake-module";
-                      imports = [
-                        { _module.args = { inherit clanLib; }; }
-                        (import ../../modules/inventoryClass/role.nix {
-                          nestedSettingsOption = mkOption {
-                            type = types.raw;
-                            description = ''
-                              See [instances.${name}.roles.${roleName}.settings](${baseHref}?option_scope=0&option=inventory.instances.${name}.roles.${roleName}.settings)
-                            '';
-                          };
-                          settingsOption = mkOption {
-                            type = types.submoduleWith {
-                              modules = [ roleSettingsModule ];
-                            };
-                          };
-                        })
-                      ];
-                    };
-                  }
-                ) (settingsModules module);
-              };
-            };
-          };
-        };
-
-      docModules = [
-        {
-          inherit self;
-        }
-        self.modules.clan.default
-        {
-          options.inventory = lib.mkOption {
-            type = types.submoduleWith {
-              modules = [
-                { noInstanceOptions = true; }
-              ]
-              ++ mapAttrsToList fakeInstanceOptions serviceModules;
-            };
-          };
-        }
-      ];
 
       baseModule =
         # Module
@@ -208,12 +67,6 @@
               title = "Clan Options";
               # scopes = mapAttrsToList mkScope serviceModules;
               scopes = [
-                {
-                  inherit baseHref;
-                  name = "Flake Options (clan.nix file)";
-                  modules = docModules;
-                  urlPrefix = "https://git.clan.lol/clan/clan-core/src/branch/main/";
-                }
                 {
                   name = "Machine Options (clan.core NixOS options)";
                   optionsJSON = "${coreOptions}/share/doc/nixos/options.json";