[Buildroot] [PATCH] pkg-infra: allow dumping reverse dependencies of a package

On 27-09-16 23:32, Yann E. MORIN wrote:

On 2016-09-27 22:40 +0200, Arnout Vandecappelle spake thusly:

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On 25-09-16 14:56, Yann E. MORIN wrote:

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Finding the packages that select another one in a specific configuration
is not very trivial:

  - when optional, the dependency is not expressed in Kconfig

  - looking at the .mk files is not very nice.

 If I understand correctly, the idea is to answer the question "why is package
foo built?", right?

Right. In my use-case, that was "what do I need to disable so I can
disable that broken package?".

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 It would make sense to also add a foo-graph-rdepends, because often you'll want
the transitive dependencies as well and it's always nice to have it in a graph.

Yup, planned. But not trivial...

 No? Isn't it just calling foo-show-rdepends from graph-depends?

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But this patch is of course a prerequisite of that feature.

And it proved already usefull in its own right. ;-)

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Introduce a way to dump reverse dependencies of packages, i.e. the list
of packages that directly depend on that package. Like for direct
dependencies, we limit the list to the first-order reverse dependencies.

Document it in the main help; use the opportunity to also docuemnt

                                                            document

Boaf... One typo more, one typo less... I stopped countign a long time
ago! ;-)

 countign, really? :-P


 Regards,
 Arnout

-- 
Arnout Vandecappelle                          arnout at mind be
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