Include.hs needs conduit 1.1+ to build 

Data/Yaml/Include.hs:35:21:
    Couldn't match type ‘()’ with ‘Event’
    Expected type: ConduitM Event Event m1 ()
      Actual type: Source m1 Event
    In a stmt of a 'do' block:
      go (cfp : seen) includeFile
      $= CL.filter (`notElem` irrelevantEvents)
    In the expression:
      do { let includeFile = takeDirectory cfp </> unpack (decodeUtf8 f);
           go (cfp : seen) includeFile
           $= CL.filter (`notElem` irrelevantEvents) }
    In a case alternative:
        EventScalar f (UriTag "!include") _ _
          -> do { let includeFile = ...;
                  go (cfp : seen) includeFile
                  $= CL.filter (`notElem` irrelevantEvents) }