A vim syntax file is provided with HACKT. By default, the syntax file is installed as PREFIX/share/hackt/vim/hac.vim, and a startup script is installed as PREFIX/share/hackt/vim/hac.vimrc. To use the syntax file automatically, add the following lines in your ~/.vimrc.
filetype on
syntax on
source PREFIX/share/hackt/vim/hac.vimrc
Improvements to the syntax file are welcome!