'build' => 'Build output',
        'sysbuild' => 'Build output (same system)',

        'build' => 'Previous Hydra build',
        'sysbuild' => 'Previous Hydra build (same system)',

    my ($projectName, $jobsetName, $jobName, $attrs) = parseJobName($value);
    $projectName ||= $project->name;
    $jobsetName ||= $jobset->name;

    my $prevBuild;

    # Pick the most recent successful build of the specified job.
    (my $prevBuild) = $db->resultset('Builds')->search(
        { finished => 1, project => $projectName, jobset => $jobsetName
        , job => $jobName, buildStatus => 0 },
        { order_by => "me.id DESC", rows => 1
        , where => \ attrsToSQL($attrs, "me.id") });

    if ($value =~ /^\d+$/) {
        $prevBuild = $db->resultset('Builds')->find({ id => int($value) });
    } else {
        my ($projectName, $jobsetName, $jobName, $attrs) = parseJobName($value);
        $projectName ||= $project->name;
        $jobsetName ||= $jobset->name;
        # Pick the most recent successful build of the specified job.
        $prevBuild = $db->resultset('Builds')->search(
            { finished => 1, project => $projectName, jobset => $jobsetName
            , job => $jobName, buildStatus => 0 },
            { order_by => "me.id DESC", rows => 1
            , where => \ attrsToSQL($attrs, "me.id") })->single;
    }