I already have the latest version of cmake installed via homebrew.

The problem appeared to be that YCM's install.sh script goes out of its way to determine the active version of python and link against its libraries[1].

For anyone with python installed via homebrew, that means it links to 2.7.3. Unfortunately, both MacVim and the homebrew version of vim link against the system python (2.7.2). As a result, loading YCM triggers an error resolving urandom and crashes vim.

[1] https://github.com/Valloric/YouCompleteMe/blob/master/instal...

I just had to rename vim in /usr/bin so it'd pick up the /usr/local/bin homebrewed version instead, but yeah, this.

That likely means your PATH is out of order, if ordered correctly /usr/local/bin should override /usr/bin. Can save you needing to do that in the future.

Hey, thanks!