Rust learned a lot from Haskell, and now offers programmers something new that is nonetheless informed by other languages. So now I’m wondering, what can Haskell learn from Rust?
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Is it possible to fix? I would totally buy in to a Haskell2020 that offered `value.method` syntax with the required restriction on the composition operator. But I don’t have the sense the broader community would.
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I think backpack is too much ceremony to be widely embraced as a fundamental part of using the language.
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I'm not sure a module system that exists outside of the language itself will ever been nearly as usable as something integrated into the language (even if it's still not first-class).
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What are you wanting to do with multiple "units" per file? IIUC, Idris calls this explicit namespaces
idris2.readthedocs.io/en/latest/tuto
I hardly ever use them but have a vague memory of finding it helpful in Coq and/or Agda.
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This doesn’t really seem like what I think is being asked for – this is more a way of letting you disambiguate overloaded names? I think Deech might want the ability to define nested modules, like in Agda (even if they are not parameterised, or lack signatures).
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Eg. In Rust you can define submodules without having to make a new file. It’s pretty handy! I’m pretty sure I saw a semi-recent proposal to add this to GHC… perhaps by Richard Eisenberg?
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