ghc-heap-view-0.4.0.0: ghci
let _ghcHeapViewDepth = 1000 :: Int
:def setPrintHeapDepth \x -> return $ "let _ghcHeapViewDepth = " ++ x ++ ":: Int"
:def printHeap \x -> return $ "GHC.HeapView.buildHeapGraph _ghcHeapViewDepth (GHC.HeapView.asBox (" ++ x ++ ")) >>= putStrLn . GHC.HeapView.ppHeapGraph"