ejemplo para proyecto frontend/backend

devenv.nix

{
  pkgs,
  lib,
  config,
  inputs,
  ...
}:

{
  # https://devenv.sh/basics/
  env = {
    API_URL = "http://localhost:8000";
  };

  # https://devenv.sh/packages/
  packages = [ ];

  # https://devenv.sh/languages/
  languages.python = {
    enable = true;
    directory = "./backend";
    venv = {
      enable = true;
      requirements = ./backend/requirements.txt;
    };
  };

  languages.javascript = {
    enable = true;
    directory = "./frontend";
    npm = {
      enable = true;
      install.enable = true;
    };
  };

  # https://devenv.sh/scripts/
  # scripts.hello.exec = ''
  #   echo hello from $GREET
  # '';

  enterShell = ''
    export PYTHONPATH=$PYTHONPATH:backend
  '';

  # https://devenv.sh/tasks/
  # tasks = {
  #   "myproj:setup".exec = "mytool build";
  #   "devenv:enterShell".after = [ "myproj:setup" ];
  # };

  # https://devenv.sh/tests/
  # enterTest = ''
  #   echo "Running tests"
  #   git --version | grep --color=auto "${pkgs.git.version}"
  # '';

  # https://devenv.sh/git-hooks/
  # git-hooks.hooks.shellcheck.enable = true;

  # See full reference at https://devenv.sh/reference/options/
}