flake.nix

{
  description = "naiserator";

  inputs.nixpkgs.url = "nixpkgs/nixos-unstable";

  outputs = { nixpkgs, ... }:
    let
      goOverlay = final: prev: {
        go = prev.go.overrideAttrs (old: {
          version = "1.23.0";
          src = prev.fetchurl {
            url = "https://go.dev/dl/go1.23.0.src.tar.gz";
            hash = "sha256-Qreo6A2AXaoDAi7T/eQyHUw78smQoUQWXQHu7Nb2mcY=";
          };
        });
      };
      withSystem = nixpkgs.lib.genAttrs [
        "x86_64-linux"
        "x86_64-darwin"
        "aarch64-linux"
        "aarch64-darwin"
      ];
      withPkgs = callback:
        withSystem (system:
          callback (import nixpkgs {
            inherit system;
            overlays = [ goOverlay ];
          }));
    in {
      devShells = withPkgs (pkgs: {
        default = pkgs.mkShell {
          buildInputs = with pkgs; [
            go
            gopls
            gotools
            go-tools
            gnumake
            gofumpt
          ];
        };
      });

      formatter = withPkgs (pkgs: pkgs.nixfmt-rfc-style);
    };
}