## Description Collecting some issues/threads on things we don't support *yet* but could ## Related - Short repr (e.g. `i64`) - https://github.com/narwhals-dev/narwhals/pull/2776#issuecomment-3148403247 - https://github.com/narwhals-dev/narwhals/pull/2776#issuecomment-3191583443 - https://github.com/pola-rs/polars/blob/e006aad236c29d258ad4a90b8af6911e8fe5599b/crates/polars-core/src/datatypes/dtype.rs#L1053-L1110 - Supertyping rules for `concat(how="..._relaxed")` - https://github.com/narwhals-dev/narwhals/pull/3191#issuecomment-3389117044 - https://github.com/pola-rs/polars/blob/40e03c19b67dbda3b81becb5321ece3900fec222/crates/polars-core/src/utils/supertype.rs#L141-L504 ### Likely out-of-scope - [`DataTypeExpr`](https://docs.pola.rs/api/python/stable/reference/datatype_expr/index.html) - [`DataType.{min,max}`](https://docs.pola.rs/api/python/stable/reference/api/polars.datatypes.Time.html)