Function installRequirementsFile

packages/python/src/install.ts:519–549

({
  pythonPath,
  pipPath,
  uvPath,
  filePath,
  workPath,
  targetDir,
  meta,
  args = [],
}: InstallRequirementsFileArg)

}

export async function installRequirementsFile({
  pythonPath,
  pipPath,
  uvPath,
  filePath,
  workPath,
  targetDir,
  meta,
  args = [],
}: InstallRequirementsFileArg) {
  // The Vercel platform already handles `requirements.txt` for frontend projects,
  // but the installation logic there is different, because it seems to install all
  // of the dependencies globally, whereas, for this Runtime, we want it to happen only
  // locally, so we'll run a separate installation.

  const actualTargetDir = targetDir || workPath;
  if (
    meta.isDev &&
    (await areRequirementsInstalled(pythonPath, filePath, actualTargetDir))
  ) {
    debug(`Skipping requirements file installation, already installed`);
    return;
  }
  await pipInstall(
    pipPath,
    uvPath,
    workPath,
    ['--upgrade', '-r', filePath, ...args],
    targetDir
  );
}