I'm going to guess you're a Rubyist. I had to look up what "vendor everything" referred to. There's a reasonably well referenced blog post by a Rubyist -- but only referenced by other Rubyists. I see that the Bundler tool looks for a 'vendor' subdirectory, so I'm going to guess that's how it became a part of the Ruby lexicon.

Anyway, just wanted to point out that it's possible you're using Ruby lingo and not general-purpose tech terms. I could be wrong, maybe I just missed the boat.

I think "bundle everything" might make sense to everybody, including Rubyists.