+override prerequisites := $(TRANSFORM) $(headers) $(footers)
+
+override indexsources := $(wildcard sources/index$(SOURCE_EXT) sources/index-*$(SOURCE_EXT))
+override indices := $(patsubst sources/%$(SOURCE_EXT),public/%.html,$(indexsources))
+
+override pagesources := $(filter-out $(indexsources),$(wildcard sources/*$(SOURCE_EXT) sources/*/*$(SOURCE_EXT)))
+override pages := $(patsubst sources/%$(SOURCE_EXT),public/%/index.html,$(pagesources))
+
+override resourcesources := $(wildcard $(addsuffix /*,$(basename $(pagesources))))
+override resources := $(patsubst sources/%,public/%,$(resourcesources))
+
+override feedsources := $(filter-out $(resourcesources),$(wildcard sources/*$(FEED_EXT) sources/*/*$(FEED_EXT)))
+override feeds := $(patsubst sources/%$(FEED_EXT),public/%.atom,$(feedsources))