macos - brew upgrade broke Vim on OS X (dyld: Library not loaded)

I've not run brew update && brew upgrade for a long time.

I just did a massive upgrade which turned out to broke my Vim.

This is what I got after running vim:

dyld: Library not loaded: /usr/local/opt/ruby/lib/libruby.2.3.0.dylib
  Referenced from: /usr/local/bin/vim
  Reason: image not found
Trace/BPT trap: 5

I've came across some websites but none of them were actually helpful.

They said that it might be related to rvm but brew uninstall vim; rvm system; brew install vim didn't help. I tried to reinstall my MacVim as well but it didn't solve the problem.

Adding export PATH="/usr/local/bin:$PATH" to my .bash_profile didn't help either.

Here's the list for future reference:

What happened to my Vim? How can I fix it?

Answer

brew link --overwrite ruby

---

Actually, it turned out to be quite simple. I followed the suggestion to run brew doctor and I got these results:

Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
    ruby

So I ran brew link ruby. This is what I got:

Linking /usr/local/Cellar/ruby/2.3.1... v
Error: Could not symlink bin/rake
Target /usr/local/bin/rake
already exists. You may want to remove it:
  rm '/usr/local/bin/rake'

As a result I decided to run brew link --overwrite ruby and now my Vim is working once again!