* Include favicon.ico only if you enable the [[plugins/favicon]] plugin.
* Include wikiicons/diff.png (and the wikiicons directory) only if you enable the CGI.
* Include a hypothetical restructuredtexthelp.rst or similar for other formats only with those formats enabled.
+
+I can see two good ways to implement this. Ideally, with
+[[conditional_text_based_on_ikiwiki_features]] available, ikiwiki could
+parse a page like conditionalpages.mdwn, which could contain a set of
+conditional-wrapped page names; that seems like the most elegant and
+ikiwiki-like approach. Alternatively, [[/ikiwiki.setup]] could contain a
+Perl-generated exclude option by default; that would work, but it seems
+hackish.
+
+> Another way might be to have a third directory of source files where
+> plugins could drop in pages, and only build the files from there if their
+> plugins were enabled.
+>
+> Using the conditionals in a page to control what other pages get built
+> feels complex to me, --[[Joey]]