As reported by @ocaisa in the Slack channel:
I'm installing ReFrame with EasyBuild on aarch64 and it is failing because it can't find the manual pages, for some reason they I am getting
The manual pages are in 3.7.1/man.
instead of in man
No idea where it is getting 3.7.1!
Never mind, I took a look at the Makefile and for some reason $VERSION is set on my VM
Ah, it is the singularity version\
To me it seems that the VERSION is not needed. I think it's a leftover from the times before moving to readthedocs where we had to maintain ourselves the multiple versions of the documentation.