git commit editor vim broken

-> % git commit
dyld: Library not loaded: /usr/local/lib/liblua.5.1.5.dylib
  Referenced from: /usr/local/bin/vim
  Reason: image not found
error: vim died of signal 5
error: There was a problem with the editor 'vim'.
Please supply the message using either -m or -F option.
tknzk@tknzks-mba [09:22:28] [~/Sites/countdown] [atom_feed *]
-> % brew upgrade vim
==> Upgrading 1 outdated package, with result:
vim 7.4.430_1
==> Upgrading vim
==> Downloading http://ftp.debian.org/debian/pool/main/v/vim/vim_7.4.430.orig.tar.gz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local --mandir=/usr/local/Cellar/vim/7.4.430_1/share/man --enable-multibyte --with-tlib=ncurses --enable-cscope --with-features=huge --with-compiledby=Homebrew --enable-l
==> make
==> make install prefix=/usr/local/Cellar/vim/7.4.430_1 STRIP=true
🍺  /usr/local/Cellar/vim/7.4.430_1: 1600 files, 28M, built in 43 seconds