Function maybeLoadPyProjectToml

packages/python-analysis/src/manifest/package.ts:497–560

(
  root: AbsPath,
  subdir: RelPath
)

}

async function maybeLoadPyProjectToml(
  root: AbsPath,
  subdir: RelPath
): Promise<PythonManifest | null> {
  const pyprojectTomlRelPath = path.join(subdir, 'pyproject.toml');
  const pyprojectTomlPath = path.join(root, pyprojectTomlRelPath);
  let pyproject: PyProjectToml | null;
  try {
    pyproject = await readConfigIfExists(
      pyprojectTomlPath,
      PyProjectTomlSchema
    );
  } catch (error: unknown) {
    if (error instanceof PythonAnalysisError) {
      error.path = pyprojectTomlRelPath;
      throw error;
    }
    throw new PythonAnalysisError({
      message: `could not parse pyproject.toml: ${error instanceof Error ? error.message : String(error)}`,
      code: 'PYTHON_PYPROJECT_PARSE_ERROR',
      path: pyprojectTomlRelPath,
    });
  }

  if (pyproject == null) {
    return null;
  }

  // Inject contents of uv.toml into pyproject.toml, overriding
  // [tool.uv].
  const uvTomlRelPath = path.join(subdir, 'uv.toml');
  const uvTomlPath = path.join(root, uvTomlRelPath);
  let uvToml: import('./uv-config/types').UvConfig | null;
  try {
    uvToml = await readConfigIfExists(uvTomlPath, UvConfigSchema);
  } catch (error: unknown) {
    if (error instanceof PythonAnalysisError) {
      error.path = uvTomlRelPath;
      throw error;
    }
    throw new PythonAnalysisError({
      message: `could not parse uv.toml: ${error instanceof Error ? error.message : String(error)}`,
      code: 'PYTHON_UV_CONFIG_PARSE_ERROR',
      path: uvTomlRelPath,
    });
  }

  if (uvToml != null) {
    if (pyproject.tool == null) {
      pyproject.tool = { uv: uvToml };
    } else {
      pyproject.tool.uv = uvToml;
    }
  }

  // Check for lock files in the same directory
  const lockFile = await maybeLoadLockFile(root, subdir);