{{ $l1 := slice }}
{{ $l2 := slice }}
{{ range $.Site.Home.Translations }}
  {{ $l1 = $l1 | append .Language }}
{{ end }}

{{ $all_lang := $.Site.Home.Translations }}
{{ range where .Site.RegularPages "Type" "in" site.Params.searchSections }}
  {{ $missing := slice}}
  {{ if .Translations }}
  {{ range .Translations }}
    {{ $l2 = $l2 | append .Language }}
  {{ end }}
  {{ $final := $l1 | complement $l2 }}
    {{ range $final }}
      {{ $missing = $missing | append . }}
    {{ end }}
  {{ else }}
    {{ $missing = $missing | append "all translations" }}
  {{ end }}
  {{ if $missing }}
    <a href="{{ .Permalink}}" style="margin-top: 1rem;">{{ .Name }}:</a>
    <div>missing: {{ index $missing 0 }}</div>
  {{ end }}
{{ end }}