David Feuer

@phadej, since you were just working on this, do you think you could take a look?

That was a pretty important patch! I'd very much rather not. I know nothing about Windows, so I'm not sure how I can help. @AndreasPK, do you have a suggestion?

Right.

~~This should probably be rewritten on top of #466, if that's accepted.~~

Never mind that last comment; `create` is the wrong thing to use anyway.

I imagine I could add a benchmark, yes, though my skills at setting up "calm" systems to actually *run* benchmarks are pretty awful. *Realistic* benchmarks I can't guarantee.

@athanclark, how was your proposal received on the list?

I also have some doubts about the efficiency of these. Might it be better to form the paths backwards and then reverse them?

@recursion-ninja, that's a problem, for sure, but I think there's already a problem. Look at the definition of `paths`. ```haskell paths (Node a as) = map (a:) $ concatMap paths...

@athanclark Are you still hoping to get some of these in? I haven't seen a libraries proposal or any progress on efficient implementation.