@@ -16,5 +16,19 @@ echo "$1 does not exist"   exit 1
 fi
 
+if [ -d "$NIXDIR" ]
+then
+  echo "$NIXDIR already exists as a directory!"
+  ls -l "$NIXDIR"
+  exit
+fi
+
+if [ -f "$NIXDIR" ]
+then
+  echo "$NIXDIR already exists as a file"
+  ls -l "$NIXDIR"
+  exit
+fi
+
 ln -s $PWD $NIXDIR
 ln -s $1 home.nix