For released versions of Chopstx, it is OK to distribute a binary
without the copy of the GNU GPL, as the license notice of Chopstx
include following exception to GNU GPL.

Note that "written offer" is still needed when you distribute binary
only.

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As additional permission under GNU GPL version 3 section 7, you may
distribute non-source form of the Program without the copy of the GNU
GPL normally required by section 4, provided you inform the receipents
of GNU GPL, and you accompany the a URL through which recipients can
access the Corresponding Source.
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