[Haskell-cafe] data.time.zoneinfo

I am trying to figure out how to use this library, seems like this should work Prelude Data.Time.ZoneInfo> ctx <- newContext Nothing Prelude Data.Time.ZoneInfo> name <- zoneInfoName (utcOlsonZone ctx) True Prelude Data.Time.ZoneInfo> newOlsonZone ctx name *** Exception: Data.Time.ZoneInfo.newOlsonZone: invalid argument (Invalid argument) but it doesn't, neither does Prelude Data.Time.ZoneInfo> newOlsonZone ctx "America/New_York" *** Exception: Data.Time.ZoneInfo.newOlsonZone: invalid argument (Invalid argument) and my zoneinfo seems to be kosher on my machine $ ls /usr/share/zoneinfo/America/New_York /usr/share/zoneinfo/America/New_York $ ls /usr/share/zoneinfo/GMT /usr/share/zoneinfo/GMT what am i missing?