Templates/list: display templates via exposed nix value

lib/modules/clan/module.nix

@@ -229,8 +229,6 @@ in
     clanInternals = {
       inventoryClass =
         let
-          localModuleSet =
-            lib.filterAttrs (n: _: !inventory._legacyModules ? ${n}) inventory.modules // config.modules;
           flakeInputs = config.self.inputs;
         in
         {
@@ -240,7 +238,7 @@ in
           imports = [
             ../inventoryClass/builder/default.nix
             (lib.modules.importApply ../inventoryClass/service-list-from-inputs.nix {
-              inherit flakeInputs clanLib localModuleSet;
+              inherit flakeInputs clanLib;
             })
             {
               inherit inventory directory;

lib/modules/inventoryClass/service-list-from-inputs.nix

@@ -1,12 +1,9 @@
 {
   flakeInputs,
   clanLib,
-  localModuleSet,
 }:
 { lib, config, ... }:
-
 let
-
   inspectModule =
     inputName: moduleName: module:
     let
@@ -28,16 +25,30 @@ in
 {
   options.modulesPerSource = lib.mkOption {
     # { sourceName :: { moduleName :: {} }}
+    readOnly = true;
+    type = lib.types.raw;
     default =
       let
         inputsWithModules = lib.filterAttrs (_inputName: v: v ? clan.modules) flakeInputs;
-
       in
       lib.mapAttrs (
         inputName: v: lib.mapAttrs (inspectModule inputName) v.clan.modules
       ) inputsWithModules;
   };
   options.localModules = lib.mkOption {
-    default = lib.mapAttrs (inspectModule "self") localModuleSet;
+    readOnly = true;
+    type = lib.types.raw;
+    default = config.modulesPerSource.self;
+  };
+  options.templatesPerSource = lib.mkOption {
+    # { sourceName :: { moduleName :: {} }}
+    readOnly = true;
+    type = lib.types.raw;
+    default =
+      let
+        inputsWithTemplates = lib.filterAttrs (_inputName: v: v ? clan.templates) flakeInputs;
+      in
+      lib.mapAttrs (_inputName: v: lib.mapAttrs (_n: t: t) v.clan.templates) inputsWithTemplates;
+
   };
 }

pkgs/clan-cli/clan_cli/clan/list.py

@@ -7,17 +7,38 @@ log = logging.getLogger(__name__)
 
 
 def list_command(args: argparse.Namespace) -> None:
-    template_list = list_templates("clan", args.flake)
+    templates = list_templates(args.flake)
 
-    print("Available local templates:")
-    for name, template in template_list.self.items():
-        print(f"  {name}: {template['description']}")
+    builtin_clan_templates = templates.builtins.get("clan", {})
 
-    print("Available templates from inputs:")
-    for input_name, input_templates in template_list.inputs.items():
-        print(f"  {input_name}:")
-        for name, template in input_templates.items():
-            print(f"    {name}: {template['description']}")
+    print("Available templates")
+    print("├── <builtin>")
+    for i, (name, template) in enumerate(builtin_clan_templates.items()):
+        is_last_template = i == len(builtin_clan_templates.items()) - 1
+        if not is_last_template:
+            print(f"│   ├── {name}: {template.get('description', 'no description')}")
+        else:
+            print(f"│   └── {name}: {template.get('description', 'no description')}")
+
+    for i, (input_name, input_templates) in enumerate(templates.custom.items()):
+        custom_clan_templates = input_templates.get("clan", {})
+        is_last_input = i == len(templates.custom.items()) - 1
+        prefix = "│" if not is_last_input else " "
+        if not is_last_input:
+            print(f"├── inputs.{input_name}:")
+        else:
+            print(f"└── inputs.{input_name}:")
+
+        for i, (name, template) in enumerate(custom_clan_templates.items()):
+            is_last_template = i == len(builtin_clan_templates.items()) - 1
+            if not is_last_template:
+                print(
+                    f"{prefix}   ├── {name}: {template.get('description', 'no description')}"
+                )
+            else:
+                print(
+                    f"{prefix}   └── {name}: {template.get('description', 'no description')}"
+                )
 
 
 def register_list_parser(parser: argparse.ArgumentParser) -> None:

pkgs/clan-cli/clan_cli/tests/test_clan_nix_attrset.py

@@ -17,7 +17,6 @@ from clan_lib.templates import (
     TemplateName,
     get_clan_nix_attrset,
     get_template,
-    list_templates,
 )
 from clan_lib.templates.filesystem import copy_from_nixstore
 
@@ -96,10 +95,6 @@ def test_clan_core_templates(
     expected_templates = ["default", "flake-parts", "minimal", "minimal-flake-parts"]
     assert clan_core_template_keys == expected_templates
 
-    vlist_temps = list_templates("clan", clan_dir)
-    list_template_keys = list(vlist_temps.inputs[InputName("clan-core")].keys())
-    assert list_template_keys == expected_templates
-
     default_template = get_template(
         TemplateName("default"),
         "clan",

pkgs/clan-cli/clan_lib/api/modules.py

@@ -168,7 +168,6 @@ def list_modules(base_path: str) -> ModuleLists:
     modules = flake.select(
         "clanInternals.inventoryClass.{?modulesPerSource,?localModules}"
     )
-    print("Modules found:", modules)
 
     return modules
 

pkgs/clan-cli/clan_lib/templates/__init__.py

@@ -1,10 +1,11 @@
 import logging
-from dataclasses import dataclass, field
+from dataclasses import dataclass
 from typing import Any, Literal, NewType, TypedDict, cast
 
 from clan_lib.dirs import clan_templates
 from clan_lib.errors import ClanCmdError, ClanError
 from clan_lib.flake import Flake
+from clan_lib.nix_models.clan import ClanTemplatesType
 from clan_lib.templates.filesystem import realize_nix_path
 
 log = logging.getLogger(__name__)
@@ -168,32 +169,18 @@ class InputPrio:
 
 @dataclass
 class TemplateList:
-    inputs: dict[InputName, dict[TemplateName, Template]] = field(default_factory=dict)
-    self: dict[TemplateName, Template] = field(default_factory=dict)
+    builtins: ClanTemplatesType
+    custom: dict[str, ClanTemplatesType]
 
 
-def list_templates(
-    template_type: TemplateType, clan_dir: Flake | None = None
-) -> TemplateList:
+def list_templates(flake: Flake) -> TemplateList:
     """
-    List all templates of a specific type from a flake, without a path attribute.
-    As these paths are not yet downloaded into the nix store, and thus cannot be used directly.
+    Show information about a module
     """
-    clan_exports = get_clan_nix_attrset(clan_dir)
-    result = TemplateList()
+    custom_templates = flake.select("clanInternals.inventoryClass.templatesPerSource")
+    builtin_templates = flake.select("clanInternals.templates")
 
-    for template_name, template in clan_exports["self"]["templates"][
-        template_type
-    ].items():
-        result.self[template_name] = template
-
-    for input_name, attrset in clan_exports["inputs"].items():
-        for template_name, template in attrset["templates"][template_type].items():
-            if input_name not in result.inputs:
-                result.inputs[input_name] = {}
-            result.inputs[input_name][template_name] = template
-
-    return result
+    return TemplateList(builtin_templates, custom_templates)
 
 
 def get_template(