Explicitly describe the effects of filterSource excluding a directory.

NixOS · May 30, 2018 · bbbfc18 · bbbfc18
1 parent 5d4a9d5
commit bbbfc18
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml
@@ -459,7 +459,9 @@ stdenv.mkDerivation {
       <literal>"unknown"</literal> (for other kinds of files such as
       device nodes or fifos — but note that those cannot be copied to
       the Nix store, so if the predicate returns
-      <literal>true</literal> for them, the copy will fail).</para>
+      <literal>true</literal> for them, the copy will fail). If you
+      exclude a directory, the entire corresponding subtree of
+      <replaceable>e2</replaceable> will be excluded.</para>
 
     </listitem>