Feed additional info to getStaticProps via getStaticPaths

[saaymeen]

Suppose I have a slug for my website /en/blog/post-1 matching the dynamic route /[lang]/blog/[post], and I'm using Next.js to export the blog post page at build time using getStaticProps and getStaticPaths.
The dilemma I am facing is as follows: Inside getStaticPaths I query a CMS for all posts, their language and SEO-slug ([lang], [post]), to generate an index for the pages and pass these as params to getStaticProps. Inside, I not want to query only the single post that is being created right now but to do that I need to know the uid of the post. I can query that in getStaticPaths alongside with the other data, but I haven't yet found a way to pass it into getStaticProps since it's not part of the route (and it shouln't be for SEO purposes).
Has anyone experienced something similar or knows of a workaround? Essentially, I am looking for a way to inject data into context from within getStaticPaths.
Cheers, Simon

[balazsorban44]

Might be a duplicate of #11272?