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Is the only blocker Fremantle's old libxcb? If so that sounds like a job for the CSSU. I don't know much about xcb internals but if the API hasn't been broken since the version packaged in Fremantle (the major version number is still 1 which suggests so) it could even be as simple as dropping in a fresher build. Worse case, some LD_LIBRARY_PATH hacks could make it work.

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