dev-haskell/stm-split
TMVars, TVars and TChans with distinguished input and output side
USE Flags
doc
Global: Adds extra documentation (API, Javadoc, etc)
hscolour
* This flag is undocumented *
hoogle
* This flag is undocumented *
profile
Global: Adds support for software performance analysis (will likely vary from ebuild to ebuild)