ParkMyCar commented on issue #6104:
URL: https://github.com/apache/arrow-rs/issues/6104#issuecomment-2251378574
Darn, yeah orphan rules and crate layout currently prevent it.
```
// approach 1
//
// In the `arrow-data` crate, this doesn't work because `arrow-array`
depends on `arrow-data`
// and we'd end up with a circular dependency.
impl Into<Arc<dyn Array>> for ArrayData { ... }
```
```
// approach 2
//
// In the `arrow-array` crate. I thought this would work, and it does if we
used
// `Box<dyn Array>`, but `Arc` is not marked as "fundamental" like Box is.
//
// See:
https://users.rust-lang.org/t/how-to-bypass-or-relax-orphan-rules/82999
impl From<ArrayData> for Arc<dyn Array> { ... }
```
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