I tried the following this post which states
Application Streams are typically named for the version of the software that is included, e.g. nodejs:8 or nodejs:10 [...]
... but as you can see below: It's not working.
$ dnf module list nodejs
Last metadata expiration check: 0:01:21 ago on Thu 02 Apr 2020 09:23:13 PM CEST.
CentOS-8 - AppStream
Name Stream Profiles Summary
nodejs 10 [d] common [d], development, minimal, s2i Javascript runtime
nodejs 12 common, development, minimal, s2i Javascript runtime
Hint: [d]efault, [e]nabled, [x]disabled, [i]nstalled
$ sudo dnf module install nodejs:12
Last metadata expiration check: 0:51:35 ago on Thu 02 Apr 2020 08:33:41 PM CEST.
Error: Problems in request:
missing groups or modules: nodejs:12
How can I specify which application stream aka version I want?