old_contents: import platform
  import re
  import subprocess
  
  def is_windows():
      '''Whether we appear to be running on Windows'''
      if platform.system() == 'Windows':
          return True
      if platform.system().startswith('CYGWIN'):
          return True
      return False
  
  many_versions = [ '1.4.32', '1.5.31', '1.6.10', '1.6.20' ]
  
  def get_single_version():
      # TODO: `shell=True` is a workaround to get CI working on Windows. It breaks the build on Linux.
      versionOutput = subprocess.run(['kotlinc', '-version'], capture_output=True, text=True, shell=is_windows())
      m = re.match(r'.* kotlinc-jvm ([0-9]+)\.([0-9]+\.)([0-9]+) .*', versionOutput.stderr)
      if m is None:
          raise Exception('Cannot detect version of kotlinc (got ' + str(versionOutput) + ')')
      major = m.group(1)
      minor = m.group(2)
      patch = m.group(3)
      current_version = f'{major}.{minor}.{patch}'
      matching_minor_versions = [ version for version in many_versions if version.startswith(f'{major}.{minor}') ]
      if len(matching_minor_versions) == 0:
          raise Exception(f'Cannot find a matching minor version for kotlinc version {current_version} (got {versionOutput}; know about {str(many_versions)})')
  
      matching_minor_versions.sort()
  
      for version in matching_minor_versions:
          if current_version >= version:
              return version
  
      return matching_minor_versions[-1]
  
      raise Exception(f'No suitable kotlinc version found for {current_version} (got {versionOutput}; know about {str(many_versions)})')
  
new_contents: import platform
  import re
  import subprocess
  import sys
  
  def is_windows():
      '''Whether we appear to be running on Windows'''
      if platform.system() == 'Windows':
          return True
      if platform.system().startswith('CYGWIN'):
          return True
      return False
  
  many_versions = [ '1.4.32', '1.5.31', '1.6.10', '1.6.20' ]
  
  def get_single_version():
      # TODO: `shell=True` is a workaround to get CI working on Windows. It breaks the build on Linux.
      versionOutput = subprocess.run(['kotlinc', '-version'], capture_output=True, text=True, shell=is_windows())
      m = re.match(r'.* kotlinc-jvm ([0-9]+)\.([0-9]+\.)([0-9]+) .*', versionOutput.stderr)
      if m is None:
          raise Exception('Cannot detect version of kotlinc (got ' + str(versionOutput) + ')')
      major = m.group(1)
      minor = m.group(2)
      patch = m.group(3)
      current_version = f'{major}.{minor}.{patch}'
      matching_minor_versions = [ version for version in many_versions if version.startswith(f'{major}.{minor}') ]
      if len(matching_minor_versions) == 0:
          raise Exception(f'Cannot find a matching minor version for kotlinc version {current_version} (got {versionOutput}; know about {str(many_versions)})')
  
      matching_minor_versions.sort()
  
      for version in matching_minor_versions:
          if current_version >= version:
              return version
  
      return matching_minor_versions[-1]
  
      raise Exception(f'No suitable kotlinc version found for {current_version} (got {versionOutput}; know about {str(many_versions)})')
  
  def get_latest_url():
      version = many_versions[-1]
      url = 'https://github.com/JetBrains/kotlin/releases/download/v' + version + '/kotlin-compiler-' + version + '.zip'
      return url
  
  if __name__ == "__main__":
      args = sys.argv
      if len(args) != 2:
          raise Exception("Bad arguments")
      command = args[1]
      if command == 'latest-url':
          print(get_latest_url())
      else:
          raise Exception("Unknown command: " + command)
  
  
subject: Add latest-url to kotlin_plugin_versions.py