By default universal ctags built from master claims version 0.0.0,
which makes it incompatible with at least vim-easytags.
Update to claim version 5.8 (the exuberant version).
The ctags implementation from Universal Ctags (https://ctags.io/)
is hopefully the best ctags alternative that works with e.g. vim.
Remove the ctags binary from emacs so it does not conflict with
this new package (the etags program remains for emacs to use).
Fredrik Fornwall