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fast package management

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SUSE

We have been working hard to get package management stack changes in so we can have them in one of the next alphas.

This started sometime last year, when Michael Schröder started to show some people a new solver which was much faster than current libzypp solver. At the same time, he designed some memory and cpu efficient structures and file formats to deal with the huge amounts of metadata. The solver operated later over this optimized pool.

One of the features of the solver is its simplicity. Current libzypp operates over a dependency problem at the resolvable level while the sat solver converts the pool into a set of rules and then operates the problem as a boolean satisfiability problem, which makes it codebase concentrate only on this, making it much smaller and simpler. The error messages on conflicts are supposed to be more human friendly too.

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