tvl-depot/haskell-overlay.nix

{ nixpkgs ? import ./nixpkgs.nix {} }:
let inherit (nixpkgs) pkgs;
in self: super: rec {
  generic-arbitrary = pkgs.haskell.lib.appendPatch
    super.generic-arbitrary
    [ ./build/generic-arbitrary-export-garbitrary.patch ];
}
Add DerivingVia newtype for generic arbitrary 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. 2019-11-30 04:57:58 +01:00			`{ nixpkgs ? import ./nixpkgs.nix {} }:`
			`let inherit (nixpkgs) pkgs;`
			`in self: super: rec {`
			`generic-arbitrary = pkgs.haskell.lib.appendPatch`
			`super.generic-arbitrary`
Move patch file to a less obtrusive location 2019-11-30 05:01:36 +01:00			`[ ./build/generic-arbitrary-export-garbitrary.patch ];`
Add DerivingVia newtype for generic arbitrary 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. 2019-11-30 04:57:58 +01:00			`}`