On Mon, Jul 22, 2013 at 7:29 AM, Paul Moore <p.f.mo...@gmail.com> wrote: > I'm still trying to be clear in my mind about what extras are, and how they > should work. From this description, it occurs to me to ask, what is the > difference between an extra and a (metadata only, empty) second distribution > that depends on the base project as well as the "additional set of > dependencies"? Is it just the admin overhead of registering a second > project?
That's one way of looking at it. But it's not implemented that way; it's more like environment markers -- i.e., conditional dependencies -- based on whether you want support for certain features that are, well, "extra". ;-) > Looking at extras this way gives a possible way of generating scripts only > when the extras are present - just add the scripts to the dummy "extra" > distribution. Setuptools doesn't actually *have* a dummy distribution (just conditional requirements in the base), but I don't see a problem with only installing a script if you asked to install the extras that script needs. It probably would've been sensible to implement easy_install that way. _______________________________________________ Distutils-SIG maillist - Distutils-SIG@python.org http://mail.python.org/mailman/listinfo/distutils-sig
