how to determain those no longer required packages

[Ray Chen]

在 2009-08-29六的 17:32 +0300，Muayyad AlSadi写道：
> warning: leaves in package-cleanup or remove-with-leaves could be your
> preferred application because it's a leaf [ie. no installed package
> depends on it, eg. pidgin or uget]

The output of package-cleanup --leaves or remove-with-leaves doesn't
include pidgin or uget package on my F10 system.

> there is a flag in conf of remove-with-leaves to exclude non-library
> binary packages from being removed
> 
> Yum does not trace if some package is installed per user request or
> pulled for dependency
yes, that's the question. seems like yum doesn't have the feature like
'isAutoRemovable' in APT. I think this feature is good for users, hope
yum developers can support this feature, or make 'package-cleanup
--leaves' and 'remove-with-leaves' plugin more stable.

Thanks,
Ray