diff --git a/hosts/common/nix.nix b/hosts/common/nix.nix
index 6ce92f04..7e663046 100644
--- a/hosts/common/nix.nix
+++ b/hosts/common/nix.nix
@@ -1,9 +1,10 @@
 {
   config,
+  lib,
   pkgs,
   ...
 }: {
-  environment.variables.FLAKE = "github:alyraffauf/nixcfg";
+  environment.variables.FLAKE = lib.mkDefault "github:alyraffauf/nixcfg";
 
   nix.settings = {
     substituters = [
diff --git a/hosts/fallarbor/default.nix b/hosts/fallarbor/default.nix
index fc239604..6b12ea6c 100644
--- a/hosts/fallarbor/default.nix
+++ b/hosts/fallarbor/default.nix
@@ -18,7 +18,11 @@
     systemd-boot.enable = true;
   };
 
-  environment.variables.GDK_SCALE = "1.5";
+  environment.variables = {
+    FLAKE = "https://flakehub.com/f/alyraffauf/nixcfg/*.tar.gz";
+    GDK_SCALE = "1.5";
+  };
+
   networking.hostName = "fallarbor";
   system.stateVersion = "24.05";
 
diff --git a/hosts/rustboro/default.nix b/hosts/rustboro/default.nix
index 62b55c13..ac53eb62 100644
--- a/hosts/rustboro/default.nix
+++ b/hosts/rustboro/default.nix
@@ -18,7 +18,11 @@
     systemd-boot.enable = true;
   };
 
-  environment.variables.GDK_SCALE = "1.25";
+  environment.variables = {
+    FLAKE = "https://flakehub.com/f/alyraffauf/nixcfg/*.tar.gz";
+    GDK_SCALE = "1.25";
+  };
+
   networking.hostName = "rustboro";
   system.stateVersion = "24.05";
   zramSwap.memoryPercent = 100;