Function getInstalledPythonsFromFilesystem

packages/python/src/version.ts:337–350

(
  basePath: string = UV_PYTHON_PATH_PREFIX
)

 * avoids spawning a `uv python list` subprocess.
 */
export function getInstalledPythonsFromFilesystem(
  basePath: string = UV_PYTHON_PATH_PREFIX
): Set<string> {
  const result = new Set<string>();
  for (const opt of allOptions) {
    const version = pythonVersionString(opt);
    if (!version) continue;
    const binPath = join(basePath, 'bin', `python${version}`);
    if (existsSync(binPath)) {
      result.add(version);
    }
  }
  return result;
}

function getInstalledPythons(): Set<string> {
  if (installedPythonsCache !== null) {