[Yum] show-leaves plugin

[Seth Vidal]

On Tue, 28 Apr 2009, Ville Skyttä wrote:

> Hello,
>
> I'd like yum to tell me if after a transaction there are any new leaf packages
> installed.  New packages installed in a transaction are the obvious ones (and
> should maybe not be displayed at all but IMO that's a minor concern that can
> be taken care of if need be, perhaps with a config option), but the more
> interesting ones are new leaves after an update or update+install transaction.
> remove-with-leaves is similar but AFAIK it handles only erase transactions.
>
> So, I came up with the attached plugin.  I don't feel too good about clearing
> cached rpmdb data in posttrans_hook but it seems necessary and the alternative
> I came up with (grabbing rpmdb data in close_hook instead of posttrans_hook
> and accessing rpmdb there through conduit._base.rpmdb) felt even worse.  Is
> there a better way?
>
> Comments and improvements welcome.  I'd like to see this eventually included
> in yum-utils.

in yum following 3.2.22 an:
was added
here

self.rpmdb.dropCachedData() # drop out the rpm cache so we don't step on bad hdr indexes
self.plugins.run('posttrans')

in runTransaction() in YumBase.

so I think what you want is already happening.

-sv