Re: cl-defstruct-based package.el, now with ert tests!

[Stefan Monnier]

> Agreed, especially since it appears to be linked in already. However,
> I'd like my new package.el to work out-of-the-box on Emacs 24.3, so I
> wouldn't be able to rely on libz support (should it appear in Emacs 24.4
> or 25.1).

Of course, another option is to be evil:
- if there's gunzip, use it.
- if we're on Windows, download a prebuilt gunzip executable from GNU
  ELPA (presumably we do have network access since in all likelyhood we
  just downloaded the targz).
- if we're not on Windows and there's no gunzip, give up in disgust.


        Stefan ;-)