Tom Close

Fair enough, would be happy with `Delay` I think. This discussion has made me think that calling them "lazy" fields might be slight misnomer, as I would typically expect lazy...

Looks like it might be a hashing issue. With the line `[Errno 2] No such file or directory: '/private/var/folders/m3/r24ql8bj2h9_g1d970f9mr40000w73/T/tmpg8px7s00/FunctionTask_9ba1cbf8e6f65aa1f6fa8bb398e2165f/'` does the `/private/var/folders/m3/r24ql8bj2h9_g1d970f9mr40000w73/T/tmpg8px7s00/FunctionTask_9ba1cbf8e6f65aa1f6fa8bb398e2165f/` directory exist?

Seems to be a issue with cross process hashing as the serial plugin seems to work

Something strange seems to be happening, unless I'm getting the wrong end of the stick with my debugging. The "read" task never seems to get run (I put a print...

> I am glad to hear that it's not an issue with how I used the splitter. I like the new interface better actually. > > I am a bit...

Could it be an `environment` related issue?

> also i wasn't sure how the second function runs without an input for the `smoothed_image` arg. in normal python that wouldn't work. do we default positional args to optional...

Ahhh, that is a bit of a trap for beginners. I was running into a common multi-proc issue explained [here](https://docs.python.org/3/library/multiprocessing.html#multiprocessing-safe-main-import) & [here](https://docs.python.org/3/library/asyncio-eventloop.html#asyncio.loop.run_in_executor). Maybe we should think about defaulting to the...

@ghisvail I think that with pre < 0.23 you probably got in the habit of typing all inputs and outputs as `Path` as the File/Directory was a bit buggy, but...

3 arg converters would be great, I'm often wanting to write generic converters that know the type of the attribute they need to convert to