Lightweight Concurrency Branch

The lightweight concurrency branch is highly interesting and relevant to my interests, however, the ghc-lwc2 branch hasn't been updated in several years even though it's listed as an active branch at https://ghc.haskell.org/trac/ghc/wiki/ActiveBranches The wiki page for the work hasn't been updated in almost two years either, https://ghc.haskell.org/trac/ghc/wiki/LightweightConcurrency Relevant papers: Composable Scheduler Activations for Haskell (2014) https://timharris.uk/papers/2014-composable-tr.pdf Composable Scheduler Activations for Haskell (2016) http://kcsrk.info/papers/schedact_jfp16.pdf What remains for integrating this branch into GHC?