From e323135f5f857a731657601c23cd4dfb3cb5d7d7 Mon Sep 17 00:00:00 2001
From: Chris Wells <chris@mathematicaster.org>
Date: Thu, 20 Aug 2026 08:53:59 -0400
Subject: Fixed the extra links in papers

---
 src/Data/Paper.hs   | 5 ++++-
 src/Hakyll/Paper.hs | 4 ++--
 2 files changed, 6 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/Data/Paper.hs b/src/Data/Paper.hs
index b86b2f0..38994de 100644
--- a/src/Data/Paper.hs
+++ b/src/Data/Paper.hs
@@ -135,7 +135,7 @@ mkPaper bib = do
         --     doi <- find' "doi" >>= fmap DOI . puri
         --     date <- getDate
         --     pure $ Published {..}
-    extraLink <- traverse puri $ M.lookup "extralink" fields
+    extraLink <- traverse pauri $ M.lookup "extralink" fields
     eprints <- case toLower <<$>> M.lookup "eprinttype" fields of
                 Just "arxiv" -> do
                     _identifier <- find' "eprint" >>= puri
@@ -155,5 +155,8 @@ mkPaper bib = do
 puri :: MonadFail m => String -> m URI
 puri u = maybe (fail $ show u <> " cannot be understood as a uri") pure $ parseRelativeReference u
 
+pauri :: MonadFail m => String -> m URI
+pauri u = maybe (fail $ show u <> " cannot be understood as a uri") pure $ parseURIReference u
+
 findit :: (Show a, Ord a, MonadFail m) => a -> M.Map a x -> m x
 findit k = maybe (fail $ "Field " <> show k <> " does not exist") pure . M.lookup k
diff --git a/src/Hakyll/Paper.hs b/src/Hakyll/Paper.hs
index 06c45d0..5cc9620 100644
--- a/src/Hakyll/Paper.hs
+++ b/src/Hakyll/Paper.hs
@@ -43,7 +43,7 @@ paperCtxt fctxt = fold $
                                   let k = sluggedKey $ itemBody i
                                       ident = toFilePath $ itemIdentifier i
                                   getMatches (fromString $ ident <> "/index.*") >>= witherM (fmap (>>= parseRelativeReference) . getRoute) >>= \case
-                                    (x:_) -> pure $ show x
+                                    (x:_) -> pure $ "/" <> show x
                                     _ -> fail $ "No extra for " <> k
     ]
 
@@ -106,7 +106,7 @@ eprintCtxt = fold $
     ]
 
 findLocal :: (StringConv a String, StringConv String a) => Item (Paper a) -> Compiler [Eprint a]
-findLocal (Item ident paper) = getMatches (getPattern potentialPdfs) >>= witherM (fmap (>>= parseRelativeReference) . getRoute) >>= pure . fmap (OtherEprint (toSL ".pdf"))
+findLocal (Item ident paper) = getMatches (getPattern potentialPdfs) >>= witherM (fmap (>>= (parseRelativeReference . ("/" <>))) . getRoute) >>= pure . fmap (OtherEprint (toSL ".pdf"))
     where
         fp :: FilePath
         fp = toFilePath ident
-- 
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