This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.
Bounded TChan's, or BTChan's, are a transactional queue with a limit to the number of elements (further calls to writeBTChan or unGetBTChan call STM retry). Users are strongly encouraged to consider using the more complete 'stm-chans' packages, which includes a bounded TChan designed on this package.