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flake.nix
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flake.nix
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{
description = "Freer Effects Demo";
inputs = {
nixpkgs.url = github:NixOS/nixpkgs/nixos-23.11;
flake-utils.url = github:numtide/flake-utils;
};
outputs = { self, nixpkgs, flake-utils }:
let
ghcVersion = "963";
compiler = "ghc${ghcVersion}";
in
flake-utils.lib.eachDefaultSystem
(system:
let
pkgs = import nixpkgs { inherit system; };
hsPkgs = pkgs.haskell.packages.${compiler}.override {
overrides = hfinal: hprev: {
freer-effects-demo = (hfinal.callCabal2nix "freer-effects-demo" ./. { });
};
};
in
rec {
devShell = pkgs.mkShell {
buildInputs = with pkgs; [
cabal-install
haskell.compiler.${compiler}
haskell.packages.${compiler}.haskell-language-server
nixpkgs-fmt
ormolu
];
};
formatter = pkgs.nixpkgs-fmt;
packages = flake-utils.lib.flattenTree {
freer-effects-demo = hsPkgs.freer-effects-demo;
};
defaultPackage = packages.freer-effects-demo;
});
}