Added rendering stuff, updated go mod

flake.nix

@@ -2,15 +2,22 @@
   description = "An example project using flutter";
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.gomod2nix = {
+        url = "github:tweag/gomod2nix";
+        inputs.nixpkgs.follows = "nixpkgs";
+        inputs.utils.follows = "utils";
+      };
   outputs = {
     self,
     flake-utils,
     nixpkgs,
+    gomod2nix,
     ...
   } @ inputs:
     flake-utils.lib.eachDefaultSystem (system: let
       pkgs = import nixpkgs {
         inherit system;
+        overlays = [ gomod2nix.overlays.default ];
       };
     in {
       devShell = pkgs.mkShell {
@@ -19,6 +26,8 @@
           gopls
           gotools
           go-tools
+          gomod2nix.packages.${system}.default
+          sqlite-interactive
         ];
       };
     });