https://github.com/msgpack/msgpack-python/commit/0c22e775c9ea71242eec237e2e032aca749e909c

https://github.com/msgpack/msgpack-python/blob/v1.0.5/COPYING

When check() is run, py.test would generate a .pyc containing the path to the
python file in the /build directory.  repro(1) currently always passes
--nocheck due to a bug, meaning that py.test is never called.  This resulted in
different paths ending up in the .pyc files.

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