install gpg with homebrew

I want to install a new version of ruby via rvm. To install that, I need gnupg2. I installed it using brew, but it could not be linked. I get the following error message when linking with brew link gpg2: Linking /usr/local/Cellar/gnupg/2.1.20... Error: Could not symlink bin/gpg-agent Target /usr/local/bin/gpg-agent is a symlink belonging to gpg-agent. You can unlink it: brew unlink gpg-agent To force the link and overwrite all conflicting files: brew link --overwrite gnupg To list all files that would be deleted: brew link --overwrite --dry-run gnupg I have no idea what the gpg-agent does and if I can savely overwrite the link without destroying something that my system somewhere needs.