git/loop-rebuild

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#!/bin/sh
ssleep () {
seconds=$1
now=$(date "+%s")
sleep $(( ((now + seconds + seconds / 4) / seconds) * seconds - now))
}
stamp () {
Meta/V 2>/dev/null | sha1sum
}
P=previous
O=observed
while :
do
while O=$(stamp) && test "$P" = "$O"
do
ssleep 300
done
ssleep 30
# opts --sha256 --leaks --san
time nice -20 Meta/Dothem -j32 --dash -- -- CC=clang; uptime; date
P=$(stamp)
Meta/V
done