diff --git a/doc/functions.xml b/doc/functions.xml
index 602d419a180..efe2590ddfb 100644
--- a/doc/functions.xml
+++ b/doc/functions.xml
@@ -133,7 +133,7 @@
stdenv.mkDerivation, are defined using this
function, which means most packages in the nixpkgs expression,
pkgs, have this function.
-
+
Example usage:
@@ -228,7 +228,7 @@
] name) from the INI generator. It gets the name
of a section and returns a sanitized name. The default
mkSectionName escapes [ and
- ] with a backslash.
+ ] with a backslash.
Nix store paths can be converted to strings by enclosing a
@@ -523,17 +523,22 @@
It is possible to inspect the arguments with which an image was built
using its buildArgs attribute.
-
-
+
+
+
+
If you see errors similar to getProtocolByName: does not exist (no such protocol name: tcp)
you may need to add pkgs.iana_etc to contents.
-
+
+
+
If you see errors similar to Error_Protocol ("certificate has unknown CA",True,UnknownCa)
you may need to add pkgs.cacert to contents.
+