From fda4426883a2e80899a9dea613910a803ccc4be0 Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Tue, 21 Nov 2017 09:22:06 -0800
Subject: Add comment explaining why TH is used in Text.Pandoc.App.

---
 src/Text/Pandoc/App.hs | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/Text/Pandoc')

diff --git a/src/Text/Pandoc/App.hs b/src/Text/Pandoc/App.hs
index 4c4525dce..41b6a310b 100644
--- a/src/Text/Pandoc/App.hs
+++ b/src/Text/Pandoc/App.hs
@@ -1671,5 +1671,7 @@ deprecatedOption o =
        Right () -> return ()
        Left e   -> E.throwIO e
 
+-- see https://github.com/jgm/pandoc/pull/4083
+-- using generic deriving caused long compilation times
 $(deriveJSON defaultOptions ''LineEnding)
 $(deriveJSON defaultOptions ''Opt)
-- 
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