anchor.diff:                height: 360,
                 child: ListView(
                   children: <Widget>[
  -                  if (_smallScreen) ..._slugSelection(context, buildState),
  +                  if (_smallScreen) ..._buildRepositorySelectionWidgets(context, buildState),
                     TextButton(
                       onPressed: buildState.refreshGitHubCommits,
                       child: const Text('Vacuum GitHub Commits'),
  
positive.code:           ),
            backgroundColor: colorTable[buildState.isTreeBuilding],
            actions: <Widget>[
              if (!_smallScreen) ..._slugSelection(context, buildState),
              IconButton(
                tooltip: 'Report Issue',
                icon: const Icon(Icons.bug_report),
                onPressed: () async {
                  const url = 'https://blog.logrocket.com';
                  if (await canLaunchUrl(flutterIssueUrl)) {
                    await launchUrl(flutterIssueUrl);
                  } else {
                    throw 'Could not launch $url';
                  }
                },
              ),
  
negative.code:     );
    }
  
    /// List of widgets for selecting slug and branch for configuring the build view.
    List<Widget> _buildRepositorySelectionWidgets(BuildContext context, BuildState buildState) {
      final ThemeData theme = Theme.of(context);
      return <Widget>[
        const Padding(
  