Mass extraction of provides from yum?

Question

I have a set of yum repositories. I have a large collection of rpms from http://pkgs.repoforge.org/. I don't want to import some of those rpms due to conflicts that they would cause. I'd like to figure out which of the remaining rpms I can import and also satisfy dependencies.

I can figure out what each rpm provides. I know that I can do a yum provides foo to figure out where to get foo from. So I can figure out the dependencies. However yum is slow to startup. I really don't want to spend a day or so calling it over and over again while I am figuring out my dependency graph.

Is there any way to convince yum to give me a bulk dump of what is available in one call? Kind of like yum list all but instead of listing packages, list everything that is provided by any package that yum knows about?

Answer 1

You can use:

yum provides '*'

and you get list all files from each repository.

Answer 2

There's also:

repoquery --tree-provides
repoquery --tree-requires
repoquery --tree-whatrequires

...depending on what you want. The latest upstream allows you to output in DOT format too.