diff --git a/lib/build-clan/default.nix b/lib/build-clan/default.nix
index 02e74aa99..7327814a0 100644
--- a/lib/build-clan/default.nix
+++ b/lib/build-clan/default.nix
@@ -3,12 +3,13 @@
 ## Add any logic to ./module.nix
 {
   lib,
+  clanLib,
   ...
 }:
 {
   flakePartsModule = {
     imports = [
-      ./interface.nix
+      (lib.modules.importApply ./interface.nix { inherit clanLib; })
       ./module.nix
     ];
   };
diff --git a/lib/build-clan/eval-docs.nix b/lib/build-clan/eval-docs.nix
index 5ac1aca7d..584aa3e06 100644
--- a/lib/build-clan/eval-docs.nix
+++ b/lib/build-clan/eval-docs.nix
@@ -1,9 +1,13 @@
-{ pkgs, lib }:
+{
+  pkgs,
+  lib,
+  clanLib,
+}:
 let
   eval = lib.evalModules {
     class = "nixos";
     modules = [
-      ./interface.nix
+      (lib.modules.importApply ./interface.nix { inherit clanLib; })
     ];
   };
   evalDocs = pkgs.nixosOptionsDoc {
diff --git a/lib/build-clan/flake-module.nix b/lib/build-clan/flake-module.nix
index 5cb96520a..a03f618ca 100644
--- a/lib/build-clan/flake-module.nix
+++ b/lib/build-clan/flake-module.nix
@@ -19,6 +19,7 @@ in
     let
       jsonDocs = import ./eval-docs.nix {
         inherit pkgs lib;
+        inherit (self) clanLib;
       };
     in
     {
diff --git a/lib/build-clan/function-adapter.nix b/lib/build-clan/function-adapter.nix
index aa8b1a601..cb5add50e 100644
--- a/lib/build-clan/function-adapter.nix
+++ b/lib/build-clan/function-adapter.nix
@@ -18,7 +18,7 @@ module:
       ;
   };
   modules = [
-    ./interface.nix
+    (lib.modules.importApply ./interface.nix { inherit (clan-core) clanLib; })
     module
     {
       inherit specialArgs;
diff --git a/lib/build-clan/interface.nix b/lib/build-clan/interface.nix
index fa4f781bb..3d652a72b 100644
--- a/lib/build-clan/interface.nix
+++ b/lib/build-clan/interface.nix
@@ -1,3 +1,4 @@
+{ clanLib }:
 {
   lib,
   self,
@@ -94,7 +95,11 @@ in
     };
 
     inventory = lib.mkOption {
-      type = types.submodule { imports = [ ../inventory/build-inventory/interface.nix ]; };
+      type = types.submodule {
+        imports = [
+          (lib.modules.importApply ../inventory/build-inventory/interface.nix { inherit clanLib; })
+        ];
+      };
       description = ''
         The `Inventory` submodule.
 
diff --git a/lib/inventory/build-inventory/interface.nix b/lib/inventory/build-inventory/interface.nix
index 8a4a60474..d1caca220 100644
--- a/lib/inventory/build-inventory/interface.nix
+++ b/lib/inventory/build-inventory/interface.nix
@@ -403,7 +403,7 @@ in
                     };
                     settings = lib.mkOption {
                       default = { };
-                      type = types.uniqueDeferredSerializableModule;
+                      type = clanLib.types.uniqueDeferredSerializableModule;
                     };
                   };
                 }
diff --git a/lib/inventory/default.nix b/lib/inventory/default.nix
index 9b3112f37..66fa02330 100644
--- a/lib/inventory/default.nix
+++ b/lib/inventory/default.nix
@@ -5,7 +5,7 @@ in
 {
   inherit (services) evalClanService mapInstances resolveModule;
   inherit (import ./build-inventory { inherit lib clanLib; }) buildInventory;
-  interface = ./build-inventory/interface.nix;
+  interface = lib.modules.importApply ./build-inventory/interface.nix { inherit clanLib; };
   # Returns the list of machine names
   # { ... } -> [ string ]
   resolveTags =
diff --git a/lib/inventory/schemas/default.nix b/lib/inventory/schemas/default.nix
index e014b190a..048a03ae9 100644
--- a/lib/inventory/schemas/default.nix
+++ b/lib/inventory/schemas/default.nix
@@ -17,7 +17,9 @@ let
 
   frontMatterSchema = jsonLib.parseOptions self.clanLib.modules.frontmatterOptions { };
 
-  inventorySchema = jsonLib.parseModule (import ../build-inventory/interface.nix);
+  inventorySchema = jsonLib.parseModule (
+    import ../build-inventory/interface.nix { inherit (self) clanLib; }
+  );
 
   renderSchema = pkgs.writers.writePython3Bin "render-schema" {
     flakeIgnore = [
diff --git a/lib/types/default.nix b/lib/types/default.nix
index 0073c0d2b..aa00fcac4 100644
--- a/lib/types/default.nix
+++ b/lib/types/default.nix
@@ -4,7 +4,12 @@
     self:
 
     let
-      checkDef = loc: def: if def.value ? imports then throw "uniqueDeferredSerializableModule doesn't allow nested imports" else def;
+      checkDef =
+        _loc: def:
+        if def.value ? imports then
+          throw "uniqueDeferredSerializableModule doesn't allow nested imports"
+        else
+          def;
     in
     # Essentially the "raw" type, but with a custom name and check
     lib.mkOptionType {
@@ -18,8 +23,9 @@
         merge = loc: defs: {
           imports = map (
             def:
-            lib.seq (checkDef loc def)
-            lib.setDefaultModuleLocation "${def.file}, via option ${lib.showOption loc}" def.value
+            lib.seq (checkDef loc def) lib.setDefaultModuleLocation
+              "${def.file}, via option ${lib.showOption loc}"
+              def.value
           ) defs;
         };
       };
diff --git a/lib/types/tests.nix b/lib/types/tests.nix
index 850ffaf9d..ffcf9fb25 100644
--- a/lib/types/tests.nix
+++ b/lib/types/tests.nix
@@ -43,7 +43,7 @@ in
     let
       eval = evalSettingsModule {
         foo = {
-          imports = [];
+          imports = [ ];
         };
       };
     in
@@ -53,15 +53,17 @@ in
       expectedError = {
         type = "ThrownError";
         message = "*nested imports";
-       };
+      };
     };
 
   test_no_function_modules =
     let
       eval = evalSettingsModule {
-        foo = {...}: {
+        foo =
+          { ... }:
+          {
 
-        };
+          };
       };
     in
     {