add twitter [etc] card previews

make-pages/Depend.hs

@@ -90,7 +90,7 @@ makeRules :: FilePath -- ^ prefix
           -> Builder
 makeRules prefix filters build data_ tmp = [b|@0
     $@buildPrefix/%/index.html: $@data_/%/info.yaml $$(MAKEPAGES)
-    	$$(call single,$@data_,$flags)
+    	$$(call single,$@data_,$@prefix,$flags)
 
     $@tmpPrefix/%.mk: $@data_/%/info.yaml $$(MAKEPAGES)
     	$$(call depend-single,$@prefix,$@build,$@data_,$flags)
@@ -112,16 +112,3 @@ filtersToFlags (GalleryFilters {nsfw}) =
 
 thumbnail :: Info -> FilePath
 thumbnail = fromMaybe (error "no thumbnail or sfw images") . #thumb
-
-addSuffix :: String -> FilePath -> FilePath
-addSuffix suf path =
-  let (pre, ext) = splitExtension path in
-  pre ++ suf ++ ext
-
-thumbFile :: FilePath -> FilePath
-thumbFile = addSuffix "_small"
-
-pageFile :: FilePath -> FilePath
-pageFile f
-  | takeExtension f == ".gif" = f
-  | otherwise                 = addSuffix "_med" f