diff --git a/mkfile b/mkfile
index 5649389..92628c3 100644
--- a/mkfile
+++ b/mkfile
@@ -2,6 +2,11 @@ MKSHELL=rc
 gitroot=`{git rev-parse --show-toplevel}
 platform=`{uname}
 
+default:V:
+    if(test -e /etc/NIXOS)
+        exec mk rebuild
+    exec mk hmswitch
+
 rebuild:V:
     git pull --rebase
     exec sudo nixos-rebuild switch --flake $gitroot