[bug#67960] [PATCH 0/4] Improve the crate importer.

[Jaeme Sifat]

I've used this to great effect when writing my crates and the test file 
passes. This should definitely be merged into master soon as this is a 
necessity for me when writing crate definitions.

Thanks for fixing the crate importer, it will be vital when trying to 
port things like `iced-0.10` and `nushell-0.88` into rust-team.


What do you think Efraim?

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Jaeme