diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 0dcef42e3f..ef3410680a 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -11535,6 +11535,7 @@ Together, these tools can help make your projects more isolated, portable, and
 reproducible.")
     (license license:expat)))
 
+;; TODO: esbuild
 (define-public r-learnr
   (package
     (name "r-learnr")