dev-templates/purescript/flake.nix

{
  description = "A Nix-flake-based Purescript development environment";

  inputs = {
    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
    easy-purescript-nix = {
      url = "github:justinwoo/easy-purescript-nix";
      flake = false;
    };
  };

  outputs = {
    self,
    nixpkgs,
    easy-purescript-nix,
  }: let
    supportedSystems = ["x86_64-linux" "x86_64-darwin" "aarch64-darwin"]; # "aarch64-linux" not supported
    forEachSupportedSystem = f:
      nixpkgs.lib.genAttrs supportedSystems (system:
        f {
          pkgs = import nixpkgs {inherit system;};
        });
  in {
    devShells = forEachSupportedSystem ({pkgs}: {
      default = let
        easy-ps = import easy-purescript-nix {inherit pkgs;};
      in
        pkgs.mkShell {
          packages =
            (with pkgs; [nodejs])
            ++ (with easy-ps; [
              purs
              spago
              purescript-language-server
              purs-tidy
            ]);
        };
    });
  };
}