{
  description = "Build config-lsp";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
    gomod2nix = {
      url = "github:tweag/gomod2nix";
      inputs.nixpkgs.follows = "nixpkgs";
      inputs.utils.follows = "utils";
    };
    utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, utils, gomod2nix }: 
    utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [
            (final: prev: {
              go = prev.go_1_22;
              buildGoModule = prev.buildGo122Module;
            })
            gomod2nix.overlays.default
          ];
        };
        inputs = [
          pkgs.go_1_22
        ];
        server = pkgs.buildGoModule {
          nativeBuildInputs = inputs;
          pname = "github.com/Myzel394/config-lsp";
          version = "v0.0.1";
          src = ./server;
          vendorHash = "sha256-s+sjOVvqU20+mbEFKg+RCD+dhScqSatk9eseX2IioPI";
          checkPhase = ''
            go test -v $(pwd)/...
          '';
        };
      in {
        packages = {
          default = server;
          "vs-code-extension" = let
            name = "config-lsp-vs-code-extension";
            node-modules = pkgs.mkYarnPackage {
              src = ./vs-code-extension;
              name = name;
              packageJSON = ./vs-code-extension/package.json;
              yarnLock = ./vs-code-extension/yarn.lock;
              yarnNix = ./vs-code-extension/yarn.nix;

              buildPhase = ''
                yarn --offline run compile
              '';
              installPhase = ''
                mv deps/${name}/out $out
                cp ${server}/bin/config-lsp $out/
              '';
              distPhase = "true";
            };
          in node-modules;
        };
        devShells.default = pkgs.mkShell {
          buildInputs = inputs ++ (with pkgs; [
            mailutils
            wireguard-tools
            antlr
          ]) ++ (if pkgs.stdenv.isLinux then with pkgs; [
            postfix
          ] else []);
        };
        devShells."vs-code-extension" = pkgs.mkShell {
          buildInputs = [
            pkgs.nodejs
          ];
        };
      }
    );
}