My actual use case is to have a noscript site, and a heavily styled site, each with a different subdomain. E.g noscr.example.com and pretty.example.com. They share the same content and page bundle structure, just different styling.

With multilingual support from Hugo, it is able to generate multiple sites in different directories in the publishDir.

Is there a way to do this but with different configuration? Such as applying a different theme for each directory in publishDir. Or just different site variable? Then templating could be conditionally applied.

Might it be just just simpler to run a shell script for each hugo build, setting a site variable in the arguments?