Use portable common LISP

[HenryS1]

JSCL uses some SBCL specific functions. It looks like it's only a two calls to sb-posix:getenv in toplevel.lisp (lines 266 and 267). If that's all it is then I don't think it'll be hard to make the implementation portable, but it requires a bit more investigation.

[davazp]

What if we create a impl.lisp file and put every usage of implementation-specific functions there?

Like

(defun getenv (name)
  #+sbcl (sb-posix:getenv "...")
  )

Then it would be pretty easy to port them to other implementations.

[HenryS1]

Agreed, that looks like the right approach to take.