[Haskell-cafe] Help with TH trick

[Brandon Allbery]

I'm not aware of anything specifically like that, but the `make…`
functions in https://hackage.haskell.org/package/deriving-compat-0.6.1/docs/Data-Deriving.html
may allow you to do something similar?

On Sat, Oct 22, 2022 at 2:32 PM David Feuer <david.feuer at gmail.com> wrote:
>
> I remember seeing a package that offered a function used something like this:
>
> $(deriveThingy [d| instance Foo a => Thingy a |])
>
> to allow the user to specify the constraint(s) for a generated instance. I'd love to borrow the code for that, but I can't remember what package it was in, what class it derived, etc. Can anyone help?
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-- 
brandon s allbery kf8nh
allbery.b at gmail.com