Limit filter upgrader_post_install to a single plugin

I am using the following filter to run a function that generates a CSS file after a plugin gets updated. Currently the CSS gets generated when any plugin gets updated. Is there a simple way to limit this running to a particular plugin?

add_filter('upgrader_post_install', 'generate_my_css', 100, 0);

function generate_my_css() {
    $ss_dir = get_stylesheet_directory();
    $pi_dir = plugin_dir_path( __FILE__ );
    ob_start();
    require($pi_dir . 'includes/css/mycss.php');
    $css = ob_get_clean();
    file_put_contents($ss_dir . '/css/mycss.css', $css, LOCK_EX);
}

Ideally the above code would live in the plugin that was being updated but could just as easily live in the functions.php