Please update the ebuild for latest release, this has many fixes that benefit musl users along with multiple bugs that have been fixed since last ebuild bump.
conky-1.11.5 has been released 14 Aug 2019 and is in the tree since 18 Aug 2019! Only problem is it depends on lua >= 5.2 which is masked.
I think this bug can be closed.
Just to educate people like me who came across this: Can we link to any Bugzilla entry that explains the Lua problem/situation? Thanks!