Refactor(build-inventory): remove build-inventory in favor of simple and expressive evalModules

lib/modules/clan/default.nix

@@ -1,8 +1,4 @@
-{ clanLib }:
 {
-  _module.args = {
-    inherit clanLib;
-  };
   imports = [
     ./module.nix
     ./interface.nix

lib/modules/default.nix

@@ -8,8 +8,11 @@
 }:
 {
   flakePartsModule = {
+    _module.args = {
+      inherit clanLib;
+    };
     imports = [
-      (lib.modules.importApply ./clan/default.nix { inherit clanLib; })
+      ./clan/default.nix
     ];
   };
 

lib/modules/eval-docs.nix

@@ -5,9 +5,11 @@
 }:
 let
   eval = lib.evalModules {
+    # TODO: Move this into a 'classForMachines' or something
+    # @enzime why do we need this here?
     class = "nixos";
     modules = [
-      (import ./clan/default.nix { inherit clanLib; })
+      clanLib.buildClanModule.flakePartsModule
     ];
   };
   evalDocs = pkgs.nixosOptionsDoc {

lib/modules/function-adapter.nix

@@ -10,6 +10,7 @@
 module:
 (lib.evalModules {
   specialArgs = {
+    inherit (clan-core) clanLib;
     inherit
       self
       clan-core
@@ -18,7 +19,7 @@ module:
       ;
   };
   modules = [
-    (import ./clan/default.nix { inherit (clan-core) clanLib; })
+    ./clan/default.nix
     module
     {
       inherit specialArgs;

lib/modules/inventory/default.nix

@@ -4,7 +4,6 @@ let
 in
 {
   inherit (services) evalClanService mapInstances resolveModule;
-  inherit (import ../inventoryClass { inherit lib clanLib; }) buildInventory;
   interface = {
     _file = "clanLib.inventory.interface";
     imports = [

lib/modules/inventory/flake-module.nix

@@ -57,6 +57,8 @@ in
       legacyPackages.evalTests-inventory = import ./tests {
         inherit lib;
         clan-core = self;
+        inherit (self) clanLib;
+        inherit (self.inputs) nix-darwin;
       };
 
       checks = {

lib/modules/inventory/tests/default.nix

@@ -1,18 +1,28 @@
-{ clan-core, lib, ... }:
+{
+  clan-core,
+  nix-darwin,
+  lib,
+  clanLib,
+}:
 let
-  inventory = (
+  # TODO: Unify these tests with clan tests
-    import ../../inventoryClass/default.nix {
+  clan =
-      inherit lib;
+    m:
-      clanLib = clan-core.clanLib;
+    lib.evalModules {
-    }
+      specialArgs = { inherit clan-core nix-darwin clanLib; };
-  );
+      modules = [
-  inherit (inventory) buildInventory;
+        ../../clan/default.nix
+        {
+          self = { };
+        }
+        m
+      ];
+    };
 in
 {
   test_inventory_a =
     let
-      compiled = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         inventory = {
           machines = {
             A = { };
@@ -28,10 +38,11 @@ in
       };
     in
     {
+      inherit eval;
       expr = {
         legacyModule = lib.filterAttrs (
           name: _: name == "isClanModule"
-        ) compiled.machines.A.compiledServices.legacyModule;
+        ) eval.config.clanInternals.inventoryClass.machines.A.compiledServices.legacyModule;
       };
       expected = {
         legacyModule = {
@@ -41,24 +52,21 @@ in
 
   test_inventory_empty =
     let
-      compiled = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         inventory = { };
         directory = ./.;
       };
     in
     {
       # Empty inventory should return an empty module
-      expr = compiled.machines;
+      expr = eval.config.clanInternals.inventoryClass.machines;
       expected = { };
     };
   test_inventory_role_resolve =
     let
-      compiled = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             borgbackup.instance_1 = {
               roles.server.machines = [ "backup_server" ];
@@ -78,10 +86,17 @@ in
     in
     {
       expr = {
-        m1 = (compiled.machines."backup_server").compiledServices.borgbackup.matchedRoles;
+        m1 =
-        m2 = (compiled.machines."client_1_machine").compiledServices.borgbackup.matchedRoles;
+          (eval.config.clanInternals.inventoryClass.machines."backup_server")
-        m3 = (compiled.machines."client_2_machine").compiledServices.borgbackup.matchedRoles;
+          .compiledServices.borgbackup.matchedRoles;
-        inherit ((compiled.machines."client_2_machine").compiledServices.borgbackup)
+        m2 =
+          (eval.config.clanInternals.inventoryClass.machines."client_1_machine")
+          .compiledServices.borgbackup.matchedRoles;
+        m3 =
+          (eval.config.clanInternals.inventoryClass.machines."client_2_machine")
+          .compiledServices.borgbackup.matchedRoles;
+        inherit
+          ((eval.config.clanInternals.inventoryClass.machines."client_2_machine").compiledServices.borgbackup)
           resolvedRolesPerInstance
           ;
       };
@@ -113,11 +128,9 @@ in
     };
   test_inventory_tag_resolve =
     let
-      configs = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             borgbackup.instance_1 = {
               roles.client.tags = [ "backup" ];
@@ -136,7 +149,8 @@ in
       };
     in
     {
-      expr = configs.machines.client_1_machine.compiledServices.borgbackup.resolvedRolesPerInstance;
+      expr =
+        eval.config.clanInternals.inventoryClass.machines.client_1_machine.compiledServices.borgbackup.resolvedRolesPerInstance;
       expected = {
         instance_1 = {
           client = {
@@ -154,11 +168,9 @@ in
 
   test_inventory_multiple_roles =
     let
-      configs = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             borgbackup.instance_1 = {
               roles.client.machines = [ "machine_1" ];
@@ -172,7 +184,8 @@ in
       };
     in
     {
-      expr = configs.machines.machine_1.compiledServices.borgbackup.matchedRoles;
+      expr =
+        eval.config.clanInternals.inventoryClass.machines.machine_1.compiledServices.borgbackup.matchedRoles;
       expected = [
         "client"
         "server"
@@ -181,11 +194,9 @@ in
 
   test_inventory_module_doesnt_exist =
     let
-      configs = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             fanatasy.instance_1 = {
               roles.default.machines = [ "machine_1" ];
@@ -198,8 +209,8 @@ in
       };
     in
     {
-      inherit configs;
+      inherit eval;
-      expr = configs.machines.machine_1.machineImports;
+      expr = eval.config.clanInternals.inventoryClass.machines.machine_1.machineImports;
       expectedError = {
         type = "ThrownError";
         msg = "ClanModule not found*";
@@ -208,11 +219,9 @@ in
 
   test_inventory_role_doesnt_exist =
     let
-      configs = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             borgbackup.instance_1 = {
               roles.roleXYZ.machines = [ "machine_1" ];
@@ -225,8 +234,8 @@ in
       };
     in
     {
-      inherit configs;
+      inherit eval;
-      expr = configs.machines.machine_1.machineImports;
+      expr = eval.config.clanInternals.inventoryClass.machines.machine_1.machineImports;
       expectedError = {
         type = "ThrownError";
         msg = ''Roles \["roleXYZ"\] are not defined in the service borgbackup'';
@@ -236,11 +245,9 @@ in
   # So the lib.warn is turned into abort
   test_inventory_tag_doesnt_exist =
     let
-      configs = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             borgbackup.instance_1 = {
               roles.client.machines = [ "machine_1" ];
@@ -256,7 +263,7 @@ in
       };
     in
     {
-      expr = configs.machines.machine_1.machineImports;
+      expr = eval.config.clanInternals.inventoryClass.machines.machine_1.machineImports;
       expectedError = {
         type = "Error";
         # TODO: Add warning matching in nix-unit
@@ -265,11 +272,9 @@ in
     };
   test_inventory_disabled_service =
     let
-      configs = buildInventory {
+      eval = clan {
-        flakeInputs = { };
         directory = ./.;
         inventory = {
-          modules = clan-core.clanModules;
           services = {
             borgbackup.instance_1 = {
               enabled = false;
@@ -285,10 +290,10 @@ in
       };
     in
     {
-      inherit configs;
+      inherit eval;
       expr = builtins.filter (
         v: v != { } && !v.clan.inventory.assertions ? "alive.assertion.inventory"
-      ) configs.machines.machine_1.machineImports;
+      ) eval.config.clanInternals.inventoryClass.machines.machine_1.machineImports;
       expected = [ ];
     };
 }

lib/modules/inventoryClass/default.nix

@@ -1,49 +0,0 @@
-# Generate partial NixOS configurations for every machine in the inventory
-# This function is responsible for generating the module configuration for every machine in the inventory.
-{ lib, clanLib }:
-let
-  /*
-    Returns a set with NixOS configuration for every machine in the inventory.
-
-    machinesFromInventory :: Inventory -> { ${machine_name} :: NixOSConfiguration }
-  */
-  buildInventory =
-    {
-      inventory,
-      directory,
-      flakeInputs,
-      prefix ? [ ],
-      localModuleSet ? { },
-    }:
-    (lib.evalModules {
-      # TODO: move clanLib from specialArgs to options
-      specialArgs = {
-        inherit clanLib;
-      };
-      modules = [
-        ./builder/default.nix
-        (lib.modules.importApply ./service-list-from-inputs.nix {
-          inherit flakeInputs clanLib localModuleSet;
-        })
-        { inherit directory inventory; }
-        (
-          # config.distributedServices.allMachines.${name} or [ ];
-          { config, ... }:
-          {
-            distributedServices = clanLib.inventory.mapInstances {
-              inherit (config) inventory;
-              inherit localModuleSet;
-              inherit flakeInputs;
-              prefix = prefix ++ [ "distributedServices" ];
-            };
-            machines = config.distributedServices.allMachines;
-
-          }
-        )
-        ./inventory-introspection.nix
-      ];
-    }).config;
-in
-{
-  inherit buildInventory;
-}