flake.nix

{
  description = "RealWorld spec in the PureScript Halogen framework";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    purescript-overlay.url = "github:thomashoneyman/purescript-overlay";
    flake-compat.url = "github:edolstra/flake-compat";
    flake-compat.flake = false;
  };

  outputs = { self, nixpkgs, purescript-overlay, ... }:
    let
      name = "halogen-hello-world";

      supportedSystems = [
        "x86_64-linux"
      ];

      forAllSystems = f: nixpkgs.lib.genAttrs supportedSystems (system: f system);
    in
    {
      devShell = forAllSystems (system:
        let
          overlays = [ purescript-overlay.overlays.default ];
          pkgs = import nixpkgs { inherit system overlays; };
        in
        pkgs.mkShell {
          inherit name;
          buildInputs =
            [
              pkgs.esbuild
              pkgs.nodejs_22
              pkgs.purs
              pkgs.purs-tidy
              pkgs.purs-backend-es
              pkgs.purescript-language-server
              pkgs.spago-unstable
              pkgs.pnpm
            ];
        });
      formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixpkgs-fmt;
    };
}