I just tried the new install.sh with a fresh Centos 8.1 install. For me it failed with:
Phase 3 of 3: Configuration
Can't locate open.pm in @INC (you may need to install the open module)
To fix I did
dnf install perl-open.noarch
then ran install again.
Apparently Centos 8 doesn’t install perl by default.
Reference: https://github.com/rbspy/rbspy/issues/164
…jack