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This is what I want to do:
```
$(singletons [d|
newtype Dyn = D (Dyn -> Dyn)
|])
```
I'm getting this error (which I understand, but I don't know how to work around.)
```
Couldn't…
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```haskell
data AST a where
BoolLit :: Bool -> AST Bool
IntLit :: Int -> AST Int
eval :: AST a -> a
eval = [wingman| intros x, destruct x |]
```
with resulting goals:
```
2 goal…
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See:
https://github.com/Copilot-Language/copilot/blob/11ab89fbb839a99aa021f458567c7d4b7ad0c745/copilot-c99/src/Copilot/Compile/C99/Translate.hs#L56-L106
Code generation selects a function to ca…
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### Your environment
Output of `haskell-language-server --probe-tools` or `haskell-language-server-wrapper --probe-tools`:
```sh
haskell-language-server version: 0.6.0.0 (GHC: 8.8.4) (PATH: /…
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Hey,
I got handed a bunch of .proto files using rpc service definitions. They change quite frequently and I don't like to manually keep the bindings up-to-date so I am planing to invest some time in…
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### Describe the bug
haskellPackage.fast-tags is marked broken, but builds fine.
### Steps To Reproduce
```
nix-build . -A haskellPackages.fast-tags
```
The build fails because the packa…
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https://twitter.com/phadej/status/1340388889916284936
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```haskell
{-# LANGUAGE DataKinds #-}
import Data.Kind
data Nat = Z | S Nat
data HList (ls :: [Type]) where
HNil :: HList '[]
HCons :: t -> HList ts -> HList (t ': ts)
data ElemAt (…
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## Some intro words.
i'm developing an app which implements google mobile ads. it works on ~~ios devices and~~ an android device with AndroidOS 10. but i have problem with Samsung Galaxy Grand Max…
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Hi there!
First off, thanks for this great library!
I am having a hard time trying to extract the coordinates out of a 'Geometry Polygon'. Unfortunately I get a null pointer exception. Please se…