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|Pack canny_tudor -- prolog/canny/arch.pl
arch flag combines both the architecture and the
operating system as a dash-separated pair. The predicate splits
these two components apart by reading the underlying atom as a
Prolog term. This makes an assumption about the format of the
win64 for Windows,
darwin for macOS, or
linux for Linux. Maps
architecture bit-width to an atomic Arch token for contemporary
64-bit hosts, one of:
x86_64. Darwin and Linux report the
latter, Windows the former.