Excell in Haskell

The company I work for (supercede) uses the xlsx haskell package in quite interesting manners. This is both an experience report as well as an explanation how the common developer can use the xlsx package to parse or write excell files.

We for example use this package to align standardized excel files with datatypes trough generics. I'm qualified to talk about this because I personally added streaming support to the xlsx package, so it's now possible to write 1 million row excell files.

Furthermore I put this package in production for supercede for both parsing and writing of excell files.