Add a newtype, GenericArbitrary, which can be used with -XDerivingVia to derive Arbitrary instances for types with Generic, via patching generic-arbitrary to expose the underlying typeclass it uses for surfacing the type information.
		
			
				
	
	
		
			11 lines
		
	
	
	
		
			449 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			11 lines
		
	
	
	
		
			449 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
| { nixpkgs ? import ./nixpkgs.nix {}
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| , compiler ? "ghc865" }:
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| let
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|   inherit (nixpkgs) pkgs;
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|   all-hies = import (fetchTarball "https://github.com/infinisil/all-hies/tarball/master") {};
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|   hie = all-hies.selection { selector = p: { inherit (p) ghc865; }; };
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|   xanthous = (pkgs.haskellPackages
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|     .extend (import ./haskell-overlay.nix { inherit nixpkgs; }))
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|     .callPackage (import ./pkg.nix { inherit nixpkgs; }) {};
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| in
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| xanthous // { inherit hie; }
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