前はMacPortsで入れてたけど，Homebrewにはパッケージがなくて，MacTexをお勧めされる．
% brew search tex Installing TeX from source is weird and gross, requires a lot of patches, and only builds 32-bit (and thus can't use Homebrew deps on Snow Leopard.) We recommend using a MacTeX distribution: http://www.tug.org/mactex/
MacTeXをインストールすると，/usr/texbin/以下にいろいろ入るので，PATHを通すと使える．
