On Jul 9, 2007, at 1:45 PM, Phillip J. Eby wrote: > At 01:10 PM 7/9/2007 -0400, Jim Fulton wrote: >> IMO, they shouldn't have the same precedence. IMO installations made >> with the develop command should have the highest precedence. After >> all, why would someone use the develop command if they didn't want to >> see the effects of changes they're making in development. Could we >> can change the develop command to generate a different symbol, like >> REALLY_DEVELOP_DIST and give it the highest precedence? (Tempted to >> wink, but not really kidding...) It appears that it doesn't actually >> generate anything atm, but I think it should. > > I could have .egg-link files use a different precedence, but I > wouldn't make it the highest. Develop eggs have the lowest > precedence for two reasons: one, easy_install prefers to use eggs > it can copy,
Why does this matter to users? > and two, develop eggs have lower precedence to prevent you thinking > that your version requirements are correct when they aren't. > > That is, if you depend on 1.9.dev-r1201, and that picks up your > development version in place of an .egg file with the same version, > you won't be able to tell that your requirement is wrong. This can > occur if you are working on an SVN checkout - your develop egg has > the same version as the built one, but you could have changed it. That's a fair argument. I think it is just as bad to be making changes to an svn checkout and having those changes have no effect. I suppose that any time we select among two distributions with the same version based on precedence, we should issue a warning, at least when one of them is a develop dist. > This was actually more of a happy coincidence than something I > planned ahead of time, but it does occur in practice. :) It made me very unhappy when I first started working with setuptools. I use develop eggs a lot and I definately expect them to be used. > Note that in any event, if we make platform-specific eggs have > higher precedence, then platform-specific built eggs will have to > take precedence over develop eggs, because "true" develop eggs are > never viewed as "platform-specific" (because they have no platform > name in their .egg-info directory name). This argument sounds overly pedantic to me. Jim -- Jim Fulton mailto:[EMAIL PROTECTED] Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org _______________________________________________ Distutils-SIG maillist - [email protected] http://mail.python.org/mailman/listinfo/distutils-sig
