diff --git a/doc/manual/src/release-notes/rl-2.4.md b/doc/manual/src/release-notes/rl-2.4.md
index 1201e53b6..dbec5a29d 100644
--- a/doc/manual/src/release-notes/rl-2.4.md
+++ b/doc/manual/src/release-notes/rl-2.4.md
@@ -141,6 +141,8 @@ more than 2800 commits from 195 contributors since release 2.3.
   the evaluation cache. This is made possible by the hermetic
   evaluation model of flakes.
 
+  Intermediate results are not cached.
+
 * The new `--offline` flag disables substituters and causes all
   locally cached tarballs and repositories to be considered
   up-to-date.
diff --git a/src/libexpr/eval-settings.hh b/src/libexpr/eval-settings.hh
index 0cfc14c1b..3d412bbbf 100644
--- a/src/libexpr/eval-settings.hh
+++ b/src/libexpr/eval-settings.hh
@@ -185,7 +185,11 @@ struct EvalSettings : Config
         )"};
 
     Setting<bool> useEvalCache{this, true, "eval-cache",
-        "Whether to use the flake evaluation cache."};
+        R"(
+            Whether to use the flake evaluation cache.
+            Certain commands won't have to evaluate when invoked for the second time with a particular version of a flake.
+            Intermediate results are not cached.
+        )"};
 
     Setting<bool> ignoreExceptionsDuringTry{this, false, "ignore-try",
         R"(