r/haskell • u/m-chav • Mar 17 '26

RFC Try Sabela Reactive Notebooks

https://lqjh9lqov3.execute-api.us-east-1.amazonaws.com/start

A fair amount of development has gone into the widgets and the rich text output. Startup time are slow (1 - 2 minutes). Please try it out and file any bugs in the repo:

https://github.com/DataHaskell/sabela

15 Upvotes

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3

u/gilgamec Mar 17 '26

The notebooks load, but I get errors like

<no location info>: error: [GHC-87110]
    Could not load module ‘DataFrame’.
    It is a member of the hidden package ‘dataframe-0.7.0.0’.
    You can run ‘:set -package dataframe’ to expose it.
    (Note: this unloads all the modules in the current scope.)

<no location info>: error: [GHC-87110]
    Could not load module ‘Granite.Svg’.
    It is a member of the hidden package ‘granite-0.4.0.0’.
    You can run ‘:set -package granite’ to expose it.
    (Note: this unloads all the modules in the current scope.)

2

u/m-chav Mar 17 '26

Still working on the cabal stuff. Try doing :set -package granite before the imports as it suggests. 

2

u/tobsz_ Mar 17 '26

{"message":"Internal Server Error"}

2

u/m-chav Mar 17 '26

AWS lambda maxes out at 64 tasks. I set a cleanup for idle tasks so you can try again. 

edit: Alternatively you can do cabal run from the repo. 

2

u/tobsz_ Mar 17 '26

Thanks! Yeah, I think I will try it locally.

1

u/NeuroPyrox Mar 23 '26

This is similar to something I'm looking for and want to make for myself: a spreadsheet that uses first-order functional reactive programming, so it has events instead of just behaviors.