diff --git a/init.el b/init.el
index 995266c..ac5162a 100644
--- a/init.el
+++ b/init.el
@@ -5,7 +5,7 @@
                '("melpa" . "https://melpa.org/packages/"))
   (package-initialize))
 
-(setq use-package-always-ensure t
+(setq use-package-always-ensure (not (file-exists-p "/nix"))
       use-package-always-defer t
       use-package-expand-minimally t)
 (require 'use-package)