shell.nix

let
  pkgs = import
    (builtins.fetchTarball {
      name = "nixos-unstable-2023-02-21";
      url = "https://github.com/nixos/nixpkgs/archive/b69883faca9542d135fa6bab7928ff1b233c167f.tar.gz";
      sha256 = "sha256:1r846d1fb7qgqrnnkjss9r4idm9gnmh9qfvj751gfkjz63mrn4k5";
    })
    { };

  dev = pkgs.writeShellScriptBin "dev" ''
    npm run dev
  '';

  dev-host = pkgs.writeShellScriptBin "dev-host" ''
    npm run dev-host
  '';

  npm-install-serial = pkgs.writeShellScriptBin "npm-install-serial" ''
    npm cache clean --force && while ! npm install --network-timeout=1000000 --skip-integrity-check --network-concurrency=1; do echo --- ; done
  '';
in
pkgs.stdenv.mkDerivation {
  name = "shell";
  buildInputs = [
    pkgs.nixpkgs-fmt
    pkgs.nodejs-16_x
    pkgs.typescript
    dev
    dev-host
    npm-install-serial
  ];

  shellHook = ''
    export PATH=$( npm bin ):$PATH
    # keep it fresh
    npm
  '';
}