As a first step, what about trying pip's `-f` option, combined with dumping your wheels in a dumb folder served by apache/nginx:

    pip --help
    [...]
    Install Options:
      [...]
      -f, --find-links <url>      If a url or path to an html file, then parse for links to archives. If a local path or file:// url that's a directory,then look for archives in
                                  the directory listing.

EDIT: in the context of deploying some app at work, what's the interest of a full-blown hosted cheeseshop? Users of these solutions, what value does it add to a simple `pip install -f INTERNAL_PKG_URL pkg_a==1.2.3 pkg_b==0.1.2` ? Which features do you frequently use?