diff --git a/scripts/install.in b/scripts/install.in
old mode 100644
new mode 100755
index 7c3b795cc..0eaf25bb3
--- a/scripts/install.in
+++ b/scripts/install.in
@@ -45,10 +45,15 @@ case "$(uname -s).$(uname -m)" in
         path=@tarballPath_x86_64-darwin@
         system=x86_64-darwin
         ;;
-    Darwin.arm64)
+    Darwin.arm64|Darwin.aarch64)
+        # check for Rosetta 2 support
+        if ! [ -f /Library/Apple/System/Library/LaunchDaemons/com.apple.oahd.plist ]; then
+          oops "Rosetta 2 is not installed on this ARM64 macOS machine. Run softwareupdate --install-rosetta then restart installation"
+        fi
+
         hash=@binaryTarball_x86_64-darwin@
         path=@tarballPath_x86_64-darwin@
-        # eventually maybe: arm64-darwin
+        # eventually maybe: aarch64-darwin
         system=x86_64-darwin
         ;;
     *) oops "sorry, there is no binary distribution of Nix for your platform";;