rebuild with ghc 8.8.1, cabal-doctest 1.0.7, polyparse 1.13, primitive 0.7.0.0, regex-base 0.94.0.0, regex-pcre 0.95.0.0, regex-posix 0.96.0.0, regex-tdfa 1.3.1.0, easytest 0.3, unexceptionalio 0.5.0, gtk2hs-buildtools 0.13.8.0, ghc-typelits-natnormalise 0.7, resolv 0.1.1.3, ghc-typelits-knownnat 0.7.1, memory 0.15.0, RSA 2.4.1, foldl 1.4.6, lens 4.18, postgresql-binary 0.12.2, tls 1.5.0

FTR, commands used to change arch=() and then verify the changes:

$ sed -Ei "/^arch=/{s/ *?['\"]?i686['\"]? *?//;s/ *$//}" */*/PKGBUILD*

$ grep -r i686 * | grep arch= | grep -v repos

$ svn diff | grep -A 1 ^-[^-] | grep -v -- -- | cut -c2- |
  while IFS=$'\n' read -r l1; IFS=$'\n' read -r l2; do
    echo "$l1 -> $l2"
  done | sort -u

rebuild with ghc-8.0.1, base-prelude-1.0.1.1, cabal-install-1.24.0.0, cairo-0.13.2.0, cmark-0.5.2.1, data-default-0.7.0, data-default-class-0.1.0, extra-1.4.7, generic-trie-0.3.0.2, glib-0.13.3.0, gtk3 0.14.2 -> 0.14.3, haddock-api-2.17.2, haddock-library-1.4.1, js-jquery-1.12.4, memory-0.13, microlens-0.4.4.0, network-multicast-0.1.1, pango-0.13.2.0, simple-sendfile-0.2.24, stack-1.1.2, wai-3.2.1.1

rebuild with highlighting-kate-0.6.2, language-javascript-0.5.14.4, text-1.2.2.1, wai-extra-3.0.14.3