diff --git a/kiss/src/kiss/Main.hx b/kiss/src/kiss/Main.hx
index 01b174b7..cebdc4ec 100644
--- a/kiss/src/kiss/Main.hx
+++ b/kiss/src/kiss/Main.hx
@@ -1,4 +1,29 @@
 package kiss;
 
-@:build(kiss.Kiss.build("src/kiss/Main.kiss"))
-class Main {}
+#if macro
+import haxe.macro.Expr;
+import kiss.Kiss;
+import kiss.Reader;
+import kiss.Stream;
+
+using tink.MacroApi;
+#end
+
+class Main {
+    static macro function macroMain():Expr {
+        var kissInputStream = Stream.fromString(Sys.stdin().readAll().toString());
+        var k = Kiss.defaultKissState();
+        Reader.readAndProcess(kissInputStream, k, (readerExp) -> {
+            Sys.println(Kiss.readerExpToHaxeExpr(readerExp, k).toString());
+        });
+
+        return macro null;
+    }
+
+    // When called from the command-line, `kiss` converts its stdin output to Haxe expressions
+    // TODO write tests for this
+    // TODO use this to implement runAtRuntime() for sys targets by running a haxe subprocess
+    static function main() {
+        macroMain();
+    }
+}
diff --git a/kiss/src/kiss/Main.kiss b/kiss/src/kiss/Main.kiss
deleted file mode 100644
index 4bd1e234..00000000
--- a/kiss/src/kiss/Main.kiss
+++ /dev/null
@@ -1,2 +0,0 @@
-(defun main []
-    (print "Hello, world!"))
\ No newline at end of file