async function installSamCli()

in lib/setup.js [44:86]

• 29 lines of code
• 3 McCabe index (conditional complexity)

async function installSamCli(python, version) {
  const tempPath = mkdirTemp();

  // Create virtual environment
  const venvPath = path.join(tempPath, ".venv");
  await createPythonVenv(python, venvPath);

  // See https://docs.python.org/3/library/venv.html
  const binDir = isWindows() ? "Scripts" : "bin";
  const binPath = path.join(venvPath, binDir);

  // Virtual environment Python
  const pythonPath = path.join(binPath, "python");

  // Ensure installation tooling is up-to-date across platforms
  // setuptools and wheel needed for source and binary distributions
  await exec.exec(pythonPath, ["-m", "pip", "install", "--upgrade", "pip"]);
  await exec.exec(pythonPath, [
    "-m",
    "pip",
    "install",
    "--upgrade",
    "setuptools",
    "wheel",
  ]);

  // Install latest compatible version
  await exec.exec(pythonPath, [
    "-m",
    "pip",
    "install",
    "--upgrade",
    `aws-sam-cli==${version}`,
  ]);

  // Symlink from separate directory so only SAM CLI is added to PATH
  const symlinkPath = path.join(tempPath, "bin");
  fs.mkdirSync(symlinkPath);
  const sam = isWindows() ? "sam.exe" : "sam";
  fs.symlinkSync(path.join(binPath, sam), path.join(symlinkPath, sam));

  return symlinkPath;
}