I have a custom Composer command in which I'm trying to do something with a particular installed package.

The only way I've found to get a Package object is this:

    $composer = $this->requireComposer();
    $installed_repo = new \Composer\Repository\InstalledRepository([$composer->getRepositoryManager()->getLocalRepository()]);
    $package = $installedRepo->findPackage($package_name, '*');

That seems rather convoluted, especially as I have to specify a constraint when what I want is the package that is currently installed, rather than searching in repositories.

Is there a better way to do this?