On Tue, 2010-05-25 at 15:58 -0400, Matt McCutchen wrote: > On Tue, 2010-05-25 at 20:22 +0100, Matthew Garrett wrote: > > We discussed this issue at the fesco meeting today. The net outcome was > > that it's currently impractical to require that all packages that use > > yelp depend on it. However, requiring all yelp-using apps to integrate > > support for telling the user what's wrong may be unreasonable. > > > > Long-term, it would be nice for this to integrate with PackageKit > > somehow. Short-term, the simplest solution would seem to be to provide a > > stub package that provides: yelp and a yelp binary, and then have that > > binary do nothing other than tell the user that they need to install > > yelp. Spins would then be at liberty to choose whether to provide the > > "real" yelp or the stub version. Once that's implemented dependencies > > can be added. > > > > Does anyone have any objection to this approach? > > We would have to ensure that (1) "yum install yelp" chooses the real > package rather than the stub and (2) the real package can be installed > on a system containing the stub without causing a file conflict. > > An alternative would be to provide a wrapper script that runs yelp if > present or otherwise tells the user to install it, and have applications > require the wrapper package. We could either give the wrapper script a > different name and patch all applications to run that name or rename the > real yelp executable and have all callers go through the wrapper. I > don't see any way to avoid patching all the application packages to > require the wrapper package rather than "yelp", given that we want > installing "yelp" to actually install it but installing an application > to only install the wrapper. With the latest compare_providers¹ this should be fairly easy. We just have yelp-nothing (Provides: yelp) which installs a simple binary that says yelp isn't there and a "yelp" package which is the real thing. Then "yum install yelp" will install the pkg. yelp, and "yum install blah" will install yelp-nothing as a dep. ¹ http://yum.baseurl.org/wiki/CompareProviders -- James Antill - james@xxxxxxxxxxxxxxxxx http://yum.baseurl.org/wiki/releases http://yum.baseurl.org/wiki/whatsnew/3.2.28 http://yum.baseurl.org/wiki/YumMultipleMachineCaching -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
