Use callPackage whenever possible

flake.nix

@@ -120,7 +120,7 @@
                       "${username}@${hostname}" = home-manager.lib.homeManagerConfiguration {
                         modules =
                           let
-                            getUserConfig = import ./lib/utils/user-config.nix { inherit lib; };
+                            getUserConfig = pkgs.callPackage (import ./lib/utils/user-config.nix);
                             userConfigPath = getUserConfig { inherit hostname username; };
                           in [
                             (

lib/configuration.nix

@@ -1,4 +1,4 @@
-{ lib, machine, ... }: {
+{ lib, machine, pkgs, ... }: {
   imports = [
     ./modules/custom-build-vm.nix
     ./modules/custom-sops-nix.nix
@@ -38,7 +38,7 @@
         lib.attrsets.concatMapAttrs (username: user:
           let
             hostname = machine.name;
-            getUserConfig = import ./utils/user-config.nix { inherit lib; };
+            getUserConfig = pkgs.callPackage (import ./utils/user-config.nix);
             configPath = getUserConfig { inherit hostname username; };
           in
           if (configPath != null)

lib/utils/user-config.nix

@@ -1,11 +1,10 @@
-{ lib, ... }:
+{ pkgs, hostname, username, ... }:
   let
-    tryFiles = import ./try-files.nix { inherit lib; };
+    tryFiles = pkgs.callPackage (import ./try-files.nix) { };
   in
-    { hostname, username, ... }:
-      tryFiles [
-        ../users/${username}/${hostname}.nix
-        ../users${username}/common.nix
-        ../users/${username}.nix
-      ]
-      null
+    tryFiles [
+      ../users/${username}/${hostname}.nix
+      ../users${username}/common.nix
+      ../users/${username}.nix
+    ]
+    null