nimscript apparently is designed to misdetect arch on macOS when it is powerpc

[barracuda156]

This code seems to force x86_64 whenever it is not arm64, which is obviously wrong for powerpc.

nimutils/nimutils/nimscript.nim

Lines 30 to 48 in 8fcacea

	if sysctlOut in ["0", "1"]:
	targetArch = "arm64"
	else:
	targetArch = "amd64"
	else:
	echo "Override: arch = " & arch
	if targetArch == "arm64":
	if not quiet:
	echo "Building for arm64"
	setTargetStr("arm64-apple-macos13")
	elif targetArch == "amd64":
	setTargetStr("x86_64-apple-macos13")
	if not quiet:
	echo "Building for amd64"
	else:
	if not quiet:
	echo "Invalid target architecture for MacOs: " & arch
	quit(1)

P. S. I am aware the right now Nim does not have powerpc for macOS, but it does have powerpc64.