diff --git a/.package-lists/guix-emacs-manifest.scm b/.package-lists/guix-emacs-manifest.scm
index c1b6e461..c6e4d235 100644
--- a/.package-lists/guix-emacs-manifest.scm
+++ b/.package-lists/guix-emacs-manifest.scm
@@ -103,6 +103,7 @@
     "emacs-yasnippet"
     "emacs-youtube-dl"
     "emacs-ztree"
-    "font-dejavu"
+    "font-dejavu" ; This needs a properly set up ~/.config/fontconfig/fonts.conf.
     "notmuch"
+    ;; pinentry programs must be set up in ~/.gnupg/gpg-agent.conf.
     "pinentry-emacs"))