On Mon, Feb 14, 2011 at 11:13:03PM +0100, Bernd Zeimetz wrote: > > Unfortunately the solution for #403246 is not enough as the aptitude resolver > is not used on buildds. Please implement a proper dependency solution in the > traditional solver.
I'm sorry, but this is not a possible solution. The traditional "internal" resolver will never have proper dependency resolution WRT alternative build deps. It's unmaintainable, fragile, non-understandable perl. That's the reason why the bug was not fixed for over five years, and existed since forever. No one has the time or skills and understanding to add the needed functionality without breaking it in some subtle way. Any change could result in breakage and cripple the buildds. What we can do is push for the internal resolver to be replaced on the buildds with the "apt" or "aptitude" resolvers. The "apt" resolver is probably a more predictable and reliable solution at this point. The aptitude resolver was completed in a few weeks, and the following apt resolver in a couple of days. That's why they are the future: they are simple and delegate all the dependency resolving to the tools that do the job properly. They have had months of testing (aptitude for nearly a year, apt a few months), and are doing an excellent job so far. The main sticking point to making this move is concrete testing of the resolver behaviour for a large number of packages. Comparison of the difference in resolver behaviour for a large number of packages is needed in order to determine if it is safe to switch. A whole archive rebuild of squeeze would be even better. While I'm not unwilling to accept patches to the internal resolver, they would require the same amount of testing as the apt or aptitude resolvers in order to ensure their correctness. In consequence, there's really no reason not to switch to a better resolver. Regards, Roger -- .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail.
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