diff --git a/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/language-info.rkt b/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/language-info.rkt
new file mode 100644
index 0000000000..bf8c1f628d
--- /dev/null
+++ b/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/language-info.rkt
@@ -0,0 +1,10 @@
+#lang racket/base
+
+(provide get-language-info)
+
+(define (get-language-info data)
+  (lambda (key default)
+    (case key
+      [(configure-runtime)
+       '(#[at-exp/lang/runtime-config configure #f])]
+      [else default])))
diff --git a/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/reader.rkt b/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/reader.rkt
index 8e102e5b6e..7fbd16ac4b 100644
--- a/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/reader.rkt
+++ b/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/reader.rkt
@@ -26,7 +26,12 @@
                ;; fall back to /lang/reader:
                (string->symbol (string-append str "/lang/reader"))))))
      wrap-reader
-     wrap-reader
+     (lambda (orig-read-syntax)
+       (define read-syntax (wrap-reader orig-read-syntax))
+       (lambda args
+         (syntax-property (apply read-syntax args)
+                          'module-language
+                          '#(at-exp/lang/language-info get-language-info #f))))
      (lambda (proc)
        (lambda (key defval)
          (define (fallback) (if proc (proc key defval) defval))
diff --git a/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/runtime-config.rkt b/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/runtime-config.rkt
new file mode 100644
index 0000000000..a0ddb46c5f
--- /dev/null
+++ b/pkgs/racket-pkgs/at-exp-lib/at-exp/lang/runtime-config.rkt
@@ -0,0 +1,12 @@
+#lang racket/base
+
+(provide configure)
+
+(require (only-in scribble/reader make-at-readtable))
+
+(define (configure data)
+  (define old-read (current-read-interaction))
+  (define (new-read src in)
+    (parameterize ([current-readtable (make-at-readtable #:readtable (current-readtable))])
+      (old-read src in)))
+  (current-read-interaction new-read))