I think it has to do with the way the Haskell packages are disturbed. So if you installed the pandoc from extra
repository, and there was an update for any of the Haskell packages that pandoc depended on, then pandoc will have to be updated again. Meaning, instead of pandoc forcing Haskell updates, it is the other way around.
If you only use pandoc and don’t normally program in Haskell, check out pandoc-bin. This way you will only get updates for pandoc itself and its dependencies won’t force an update.
Next time, try enabling display of whitespace characters through
set list
. If I remember correctly, they can help distinguish between the Windows carriage return character and Linux end of line character.This may help for a quick overview.