Specifying How Yum Downloads Updates

[Bob Gustafson]

On Apr 15, 2009, at 09:21, Rahul Sundaram wrote:

> Bob Gustafson wrote:
>
>> I'm comparing two messengers:
>>
>> One, with 'minimum code', which relies on the user to decide  
>> whether the
>> dependency list to be removed contains elements which are actively  
>> used
>> by other packages.
>>
>> A second, (debian's package manager), which maintains a reference  
>> count
>> so it does not remove elements which are still in use by other  
>> packages.
>>
>> Which would you like to unleash on the world?
>
> Debian's dep resolver WILL remove a dependency if you run apt-get  
> remove
> a package (ie) apt-get remove foo will cause all that depends on  
> foo to
> be removed as well. There is no difference between yum and apt-get  
> here.
>
> The reference count is only useful in removing ADDITIONAL leaf  
> packages.

Yes, I'm concerned about the ADDITIONAL packages removed by yum  
because it does not maintain a reference count.

It happened to me - 152 packages were removed. Many were critical to  
the operation of my system.
A reference counting package manager would not have done that.
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