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
              ]);
          };
      });
    };
}