Setting a default layout for all Markdown files

Question

I'd like to fetch Markdown files from another repository when building an astro site, but these Markdown files do not have the layout frontmatter property.

Is there a way to 'force' markdown files to use a default layout without touching their frontmatter headers?

Answer 1

There has been a plugin recently created to do this:

https://github.com/EccentricVamp/astro-default-layout

Plugin is based on these comments if you prefer to roll your own:

https://github.com/withastro/astro/issues/397#issuecomment-1264718819