While we considered Narwhals (It's pretty new) over Ibis, but ultimately we decided to go with Ibis since it supports the SQL backends that we needed.
We have ambitions of supporting alternative APIs like Narwhals in future though, that can map polars API to Ibis's internal representation.
We found Ibis to be super extensible. In xorq, we also support pandas UDFs, so if you know pandas you should be pretty well covered. UDFs are pretty nice way to extend the API.
What sort of operations did you find Ibis was missing when you tried? What about it isn't extensible?
We have ambitions of supporting alternative APIs like Narwhals in future though, that can map polars API to Ibis's internal representation.
We found Ibis to be super extensible. In xorq, we also support pandas UDFs, so if you know pandas you should be pretty well covered. UDFs are pretty nice way to extend the API.
What sort of operations did you find Ibis was missing when you tried? What about it isn't extensible?