Context
Sometimes, I like reading code on paper rather than on screen (so I can scribble / write on them.) On linux, I just use a2ps.
Question
Currently, I’m on OSX. What is a good tool for taking a bunch of *.clj files, and convering them into readable .pdf/.ps files?
I’m not sure what your definition of readable is, but you could use Pygments to convert the code to syntax-highlighted HTML and then either print that out directly or use another tool like Pandoc to convert it to PDF. (You can also use Pygments to convert to LaTeX and then convert that to PDF.)
Also, some quick googling turns up this blogpost, which suggests that the GNU utility enscript can be installed somehow (possibly via MacPorts). I’m not able to test this though.