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flake.nix
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flake.nix
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{
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
flake-utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, flake-utils, ... }:
let
systems = with flake-utils.lib; [
system.x86_64-linux
system.aarch64-linux
system.x86_64-darwin
system.aarch64-darwin
];
ghcVersion = "ghc924";
in flake-utils.lib.eachSystem systems (system:
let
pkgs = import nixpkgs {
inherit system;
config.packageOverrides = import (nix/overlays.nix) {
inherit ghcVersion;
};
};
haskell-packages = pkgs.haskell.packages."${ghcVersion}";
packages = flake-utils.lib.flattenTree rec {
inherit (haskell-packages)
haskell-language-server
fourmolu;
default = haskell-packages.spectacle;
};
apps = {
fourmolu = {
type = "app";
program = "${packages.fourmolu}/bin/fourmolu";
};
haskell-language-server = {
type = "app";
program = "${packages.haskell-language-server}/bin/haskell-language-server";
};
};
devShells = {
default = haskell-packages.shellFor {
name = "spectacle";
buildInputs = with haskell-packages; [
fourmolu
haskell-language-server
];
packages = pkgs: [
pkgs.spectacle
];
};
};
in {
inherit apps devShells packages;
});
}