I shared this since it seems to address a somewhat similar niche that I have had hopes to one day develop, based on FlowBase [1]; A library of streaming processing components based on basic operations, that can be easily stitched together into larger pipelines in a compiled language that can run on smaller hardware too.

FlowBase or I didn't have much of ideas about how to keep data structures compact, as the linked library does, and I was mostly aiming to make it really easy to build streaming pipelines.

I haven't yet got my head around how the composability story is in rosalind though, so would be interested in any pointers or examples on how this would be done using it.

[1] https://github.com/flowbase/flowbase