You need to have the Glasgow Haskell Compiler installed, no additional libraries are needed and no explicit compilation is required.
On Debian-like systems this can be done with:
$ apt-get install ghc
The basic mode of operation is to just pipe the output of the driver.hs
program into the printer device, like so:
$ ./driver.hs ARGS... > /dev/usb/lpX
where lpX is the device node of your printer.
$ ./driver.hs init line "Hello world" feed cut
$ ./driver.hs init bitmap 0 0 bitmaps/logo2013_name.pbm feed cut
$ ./driver.hs init just_center latex "x + y^2 = 0" feed cut
From a file:
$ ./driver.hs init just_center latex "$(cat foo.tex)" feed cut