File _constraints of Package libgav1

<?xml version="1.0"?>
<constraints>
	<overwrite>
		<conditions>
			<arch>x86_64</arch>
			<arch>i586</arch>
		</conditions>
		<hardware>
			<cpu>
			<flag>avx2</flag> <!-- Some tests statically link the assembler subroutines without the dynamic dispatch that the actual library does, which means they do not run on old CPUs. -->
			</cpu>
		</hardware>
	</overwrite>
</constraints>