[Haskell-cafe] Bundle patterns with type aliases

[Carter Schonwald]

These are great ideas! Could you please create a ghc tracker ticket with a
tiny examples or two?

There may be specific technical reasons we might not be able to do so for
type synonyms in ghc, but I don’t see any obvious barriers in the case of
David’s excellent idea, I’ve def seen lots of great code out there where
you’d really want either associated pattern synonyms or to bundle pattern
synonyms with the exported public interface for a type class.

I’m sure there’s some devil in the details but these sound lovely.  Step -1
is making up 1-2 toy examples and explaining what and why you want it on a
ghc ticket!

On Wed, Sep 8, 2021 at 1:25 PM David Feuer <david.feuer at gmail.com> wrote:

> I would like that, along with the ability to bundle patterns with classes.
>
> On Wed, Sep 8, 2021, 1:13 PM Keith <keith.wygant at gmail.com> wrote:
>
>> Is there currently a way to 'bundle' a pattern with a type alias? And if
>> not, could that capability be added to the PatternSynonyms GHC extension?
>> (Is this the right place to ask, or should I be asking a GHC list?)
>>
>> --Keith
>> Sent from my phone with K-9 Mail.
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