defaults/layouts/sitemap.xml
<?xml version="1.0" encoding="utf-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
{% for post in posts %}
<url>
<loc>{{ config.url }}/blog/{{ post.permalink}}</loc>
<lastmod>{{ post.date.strftime("%Y-%m-%dT%H:%M:%SZ") }}</lastmod>
<priority>0.6</priority>
</url>
{% endfor %}
{% for page in pages %}
<url>
<loc>{{ config.url }}/{{ page.permalink }}</loc>
<lastmod>{{ page.date.strftime("%Y-%m-%dT%H:%M:%SZ") }}</lastmod>
</url>
{% endfor %}
</urlset>