Flake for go development

flake.nix

{
  description = "A Nix flake for Go and Templ projects with npm packages";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    systems.url = "github:nix-systems/default";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, systems, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [];
        };
      in {
        devShells.default = pkgs.mkShell {
          buildInputs = [
            pkgs.templ
            pkgs.go
            pkgs.golangci-lint
            pkgs.gopls
            pkgs.gotools
            pkgs.go-tools
            pkgs.tailwindcss
            pkgs.nodejs
            pkgs.nodePackages.node2nix
          ];

          shellHook = ''
            if [ ! -d "node_modules" ]; then
              echo "Installing npm packages..."
              npm install daisyui
            fi
          '';
        };
      }
    );
}