Dear Tran + Gabriel,
I think I discovered that one easy-to-repair problem with
chunks = L.impurely foldsM (fmap Chunk L.vector) (view (chunksOf 10)
nums)
is the very simple one that you forgot the add the characteristic
`Inlinable` to the definition of `Pipes.Group.foldsM`
I sent a
patch. https://github.com/Gabriel439/Haskell-Pipes-Group-Library/pull/6
You can see some timing differences for the programs I mentioned before in
the notes added in
discussion there. I had started to think that FreeT wasn't really much to
blame in this program,
just the use of `next` in the definition of `splitAt`. In fact, as I note
there, the best `FreeT` variant
takes half-again as long an equivalent program using
https://github.com/michaelt/streaming which is
just the obvious 'pipes-like' optimization of `FreeT`
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