public function maybe_set_common_lib_info() {

		$common_version = file_get_contents( $this->plugin_path . 'common/src/Tribe/Main.php' );

		// if there isn't a tribe-common version, bail
		if ( ! preg_match( "/const\s+VERSION\s*=\s*'([^']+)'/m", $common_version, $matches ) ) {
			add_action( 'admin_head', array( $this, 'missing_common_libs' ) );

			return;
		}

		$common_version = $matches[1];

		if ( empty( $GLOBALS['tribe-common-info'] ) ) {
			$GLOBALS['tribe-common-info'] = array(
				'dir'     => "{$this->plugin_path}common/src/Tribe",
				'version' => $common_version,
			);
		} elseif ( 1 == version_compare( $GLOBALS['tribe-common-info']['version'], $common_version, '<' ) ) {
			$GLOBALS['tribe-common-info'] = array(
				'dir'     => "{$this->plugin_path}common/src/Tribe",
				'version' => $common_version,
			);
		}
	}