Error: Required vim compiled with +ruby
E117: Unknown function: rubycomplete#Complete

I had this magic vim-ruby package installed, but it wouldn't let me :rubydo or use Ruby omni-completion in Vim. I had to force-uninstall every vim-related package. It whined when I did that because apparently some system package had a dependency on vim.

It turns out I had vim-ruby, vim-perl, vim-common, vim, gvim, and vim-tiny packages all installed, and possibly some other vim-somethings that I couldn't manage to track down, and I have no idea what any of them do / did. I assume some of them are virtual packages of some sort or another. How the hell many packages does it take to get a working vim? Let's see:

chester@compy ~ $ sudo apt-get install vim-that-actually-works
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package vim-that-actually-works</pre>

In any case force-removing them all and starting over and installing just vim and vim-ruby and vim-perl seems to have worked. But this really ticks me off.