During merges, cfg-update fails constantly with: Can't locate Term/ReadKey.pm in @INC (you may need to install the Term::ReadKey module) (@INC contains: /etc/perl /usr/local/lib64/perl5/5.26.2/x86_64-linux-thread-multi /usr/local/lib64/perl5/5.26.2 /usr/lib64/pe rl5/vendor_perl/5.26.2/x86_64-linux-thread-multi /usr/lib64/perl5/vendor_perl/5.26.2 /usr/lib64/perl5/5.26.2/x86_64-linux-thread-multi /usr/lib64/perl5/5.26.2) at /usr/bin/cfg-update line 6. BEGIN failed--compilation aborted at /usr/bin/cfg-update line 6.
cfg-update-1.8.9, the only version in the Gentoo repo currently, already has this dependency for run-time. Be sure this module is available for your current version of perl.
No idea then, I have only one perl on my system and no perl related env vars.