Duplicate section on ghc 8.6.4 download page
At https://www.haskell.org/ghc/download_ghc_8_6_4.html#linux_x86_64, there are two identical sections "Debian 9 (with DWARF support)". The second one was probably meant to be Debian 8.
At https://www.haskell.org/ghc/download_ghc_8_6_4.html#linux_x86_64, there are two identical sections "Debian 9 (with DWARF support)". The second one was probably meant to be Debian 8.