diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 00000000..aba449b2
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,4 @@
+;;; Directory Local Variables            -*- no-byte-compile: t -*-
+;;; For more information see (info "(emacs) Directory Variables")
+
+((nil . ((compile-command . "nixos-rebuild build"))))