code: def packages(ciprcfg, env, opts, console):
      
      for name, source in ciprcfg.packages.items():
          console.normal('- %s' % name)
  
          if opts.long_details:
              console.normal('  - directory: %s' % path.join(env.package_dir, name))
              console.normal('  - source: %s' % source)
docs: List installed packages for this project