@cli.argument('--count', help='Show at most this many tasks',
                  metavar='NUM', default=1, type=int)
    @cli.argument('--release', help="Show the task id for a specific version",
                  metavar='VERSION', type=mediawiki_version)
    @cli.subcommand('show')
    def show(self, *args):
        '''
        Show a list of deployment blockers tasks
        '''
        limit = self.arguments.count
        constraints = {}
        if self.arguments.release:
            constraints['query'] = self.arguments.release
            limit = 1

        res = phab.maniphest.search(
            queryKey="GTbIUdDaMLqV",
            constraints=constraints,
            limit=limit)

        for task in res.data:
            if limit > 1:
                print(
                    "T%d %s %s" %
                    (task["id"],
                     task['fields']['status']['name'],
                     task['fields']['custom.release.version']))
            else:
                print("T%d" % task["id"])