qt5-systems/qt5-systems-5.4.0.20181230-2-x86_64.pkg.tar.zst build reproducible in our test framework:
feb5f9d9608514fc6370eafa65501f5a811defa92a85043032a06e72c488d1cb qt5-systems-5.4.0.20181230-2-x86_64.pkg.tar.zst
cfa8da8bca3689e21ac33e144975bd2d8551324bd2b5189c5e979fbb43245a50 qt5-systems-5.4.0.20181230-2-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
cfa8da8bca3689e21ac33e144975bd2d8551324bd2b5189c5e979fbb43245a50 qt5-systems-5.4.0.20181230-2-x86_64.pkg.tar.zst-b2.BUILDINFO.txt