diff --git a/nix-system-configs/modules/system/blank_system_USE_THIS_AS_COPY.nix b/nix-system-configs/modules/system/blank_system_USE_THIS_AS_COPY.nix
index 41384a0..6a5afa3 100644
--- a/nix-system-configs/modules/system/blank_system_USE_THIS_AS_COPY.nix
+++ b/nix-system-configs/modules/system/blank_system_USE_THIS_AS_COPY.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,14 +30,11 @@
   };
 
   imports = [
-    ../desktop-manager/sway_greetd_homemanager.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    # Optionally to enable remote building: ./modules/toolsets/remote_building.nix
-    #./modules/songsheet/wavelog/docker-compose.nix
-    #./modules/secrets-config/sops-the-blank-system.nix
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    (choose [ ./modules/secrets-config/sops-the-blank-system.nix ../secrets-config/sops-the-blank-system.nix ])
   ];
 
   config = {
diff --git a/nix-system-configs/modules/system/build_machine.nix b/nix-system-configs/modules/system/build_machine.nix
index 2bc2328..b5a2ef0 100644
--- a/nix-system-configs/modules/system/build_machine.nix
+++ b/nix-system-configs/modules/system/build_machine.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,11 +30,11 @@
   };
 
   imports = [
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    ../secrets-config/sops-build-machine.nix
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    (choose [ ./modules/secrets-config/sops-build-machine.nix ../secrets-config/sops-build-machine.nix ])
   ];
 
   config = {
diff --git a/nix-system-configs/modules/system/compose-songsheet.nix b/nix-system-configs/modules/system/compose-songsheet.nix
index 89a2148..95fd8fc 100644
--- a/nix-system-configs/modules/system/compose-songsheet.nix
+++ b/nix-system-configs/modules/system/compose-songsheet.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,16 +30,16 @@
   };
 
   imports = [
-    ../desktop-manager/sway_greetd_homemanager.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    # Optionally: ../toolsets/remote_building.nix
+    (choose [ ./modules/desktop-manager/sway_greetd_homemanager.nix ../desktop-manager/sway_greetd_homemanager.nix ])
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    # Optionally: (choose [ ./modules/toolsets/remote_building.nix ../toolsets/remote_building.nix ])
 
     ## Compose modules for Portainer service
-    ../songsheet/wavelog/docker-compose.nix
-    ../secrets-config/sops-composesongsheet.nix
+    (choose [ ./modules/songsheet/wavelog/docker-compose.nix ../songsheet/wavelog/docker-compose.nix ])
+    (choose [ ./modules/secrets-config/sops-composesongsheet.nix ../secrets-config/sops-composesongsheet.nix ])
   ];
 
   config = {
diff --git a/nix-system-configs/modules/system/database.nix b/nix-system-configs/modules/system/database.nix
index 772f117..f22ec06 100644
--- a/nix-system-configs/modules/system/database.nix
+++ b/nix-system-configs/modules/system/database.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,15 +30,15 @@
   };
 
   imports = [
-    ../desktop-manager/gnome.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    ../secrets-config/sops-database.nix
-    ../system_scripts/gcloud_backup.nix
+    (choose [ ./modules/desktop-manager/gnome.nix ../desktop-manager/gnome.nix ])
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    (choose [ ./modules/secrets-config/sops-database.nix ../secrets-config/sops-database.nix ])
+    (choose [ ./modules/system_scripts/gcloud_backup.nix ../system_scripts/gcloud_backup.nix ])
     ## TODO: Make this more elegant and less risky for unexpected errors happening.
-] ++ lib.optional (builtins.pathExists ./hardware-configuration.nix) ./hardware-configuration.nix;
+  ] ++ lib.optional (builtins.pathExists ./hardware-configuration.nix) ./hardware-configuration.nix;
 
   config = {
     local.hostname = "nixosdd";
diff --git a/nix-system-configs/modules/system/forgejo.nix b/nix-system-configs/modules/system/forgejo.nix
index 583c0f7..5a1a6da 100644
--- a/nix-system-configs/modules/system/forgejo.nix
+++ b/nix-system-configs/modules/system/forgejo.nix
@@ -7,6 +7,7 @@
   home-manager = builtins.fetchTarball "https://github.com/nix-community/home-manager/archive/release-25.11.tar.gz";
   cfg = config.services.forgejo;
   srv = cfg.settings.server;
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
 in {
   options.local = {
     hostname = lib.mkOption {
@@ -32,12 +33,12 @@ in {
   };
 
   imports = [
-    ../desktop-manager/sway_greetd_homemanager.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../toolsets/remote_building.nix
-    ../bootloader/seabios-assigned-proxmox-at-birth.nix
-    ../lix-default.nix
+    (choose [ ./modules/desktop-manager/sway_greetd_homemanager.nix ../desktop-manager/sway_greetd_homemanager.nix ])
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/toolsets/remote_building.nix ../toolsets/remote_building.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-proxmox-at-birth.nix ../bootloader/seabios-assigned-proxmox-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
   ];
 
   config = {
diff --git a/nix-system-configs/modules/system/teamspeak.nix b/nix-system-configs/modules/system/teamspeak.nix
index 6f89dbd..fc57454 100644
--- a/nix-system-configs/modules/system/teamspeak.nix
+++ b/nix-system-configs/modules/system/teamspeak.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,15 +30,15 @@
   };
 
   imports = [
-    ../desktop-manager/sway_greetd_homemanager.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    # Optionally: ./modules/toolsets/remote_building.nix
+    (choose [ ./modules/desktop-manager/sway_greetd_homemanager.nix ../desktop-manager/sway_greetd_homemanager.nix ])
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    # Optionally: (choose [ ./modules/toolsets/remote_building.nix ../toolsets/remote_building.nix ])
     ## Compose modules for Portainer service
-    ../songsheet/wavelog/docker-compose.nix
-    ../secrets-config/sops-composesongsheet.nix
+    (choose [ ./modules/songsheet/wavelog/docker-compose.nix ../songsheet/wavelog/docker-compose.nix ])
+    (choose [ ./modules/secrets-config/sops-composesongsheet.nix ../secrets-config/sops-composesongsheet.nix ])
   ];
 
   config = {
diff --git a/nix-system-configs/modules/system/traefik.nix b/nix-system-configs/modules/system/traefik.nix
index 07d2ac8..28b6d7c 100644
--- a/nix-system-configs/modules/system/traefik.nix
+++ b/nix-system-configs/modules/system/traefik.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,12 +30,12 @@
   };
 
   imports = [
-    ../desktop-manager/sway_greetd_homemanager.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    # Optionally: ./modules/toolsets/remote_building.nix
+    (choose [ ./modules/desktop-manager/sway_greetd_homemanager.nix ../desktop-manager/sway_greetd_homemanager.nix ])
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    # Optionally: (choose [ ./modules/toolsets/remote_building.nix ../toolsets/remote_building.nix ])
   ];
 
   config = {
diff --git a/nix-system-configs/modules/system/wireguard_server.nix b/nix-system-configs/modules/system/wireguard_server.nix
index db47c70..32ee0fb 100644
--- a/nix-system-configs/modules/system/wireguard_server.nix
+++ b/nix-system-configs/modules/system/wireguard_server.nix
@@ -3,7 +3,9 @@
   pkgs,
   lib,
   ...
-}: {
+}: let
+  choose = paths: builtins.head (builtins.filter (p: builtins.pathExists p) paths);
+in {
   options.local = {
     hostname = lib.mkOption {
       type = lib.types.str;
@@ -28,12 +30,12 @@
   };
 
   imports = [
-    ../desktop-manager/sway_greetd_homemanager.nix
-    ../local/hostname_username.nix
-    ../local/networking_local.nix
-    ../bootloader/seabios-assigned-iso-at-birth.nix
-    ../lix-default.nix
-    ../secrets-config/sops-wireguard.nix
+    (choose [ ./modules/desktop-manager/sway_greetd_homemanager.nix ../desktop-manager/sway_greetd_homemanager.nix ])
+    (choose [ ./modules/local/hostname_username.nix ../local/hostname_username.nix ])
+    (choose [ ./modules/local/networking_local.nix ../local/networking_local.nix ])
+    (choose [ ./modules/bootloader/seabios-assigned-iso-at-birth.nix ../bootloader/seabios-assigned-iso-at-birth.nix ])
+    (choose [ ./modules/lix-default.nix ../lix-default.nix ])
+    (choose [ ./modules/secrets-config/sops-wireguard.nix ../secrets-config/sops-wireguard.nix ])
     # Optionally to enable remote building: ./modules/toolsets/remote_building.nix
     #./modules/songsheet/wavelog/docker-compose.nix
     #./modules/secrets-config/sops-the-blank-system.nix