Newtype for str / String

[sergiimk]

Have you ever considered supporting newtype derivations for string-backed identifiers?

I'm thinking of a similar reference-buffer duality as one between std::path::Path and PathBuf that gives you an option to wrap a str with the newtype without allocating, e.g.:

struct DatasetID(str);
struct DatasetIDBuf(String);

While some of the existing derivations are compatible with these types it still leaves a large enough amount of boilerplate to be written to enable conversions and comparisons between the two to discourage the use of the newtype pattern for string.