[CentOS] yum/dnf time constraints

Mon Nov 15 21:08:00 UTC 2021
Phil Perry <pperry at elrepo.org>

On 15/11/2021 11:49, Leon Fauster via CentOS wrote:
> Am 14.11.21 um 14:59 schrieb Phil Perry:
>> On 14/11/2021 13:08, Leon Fauster via CentOS wrote:
>>> Hey,
>>>
>>> i wonder if its possible to use dnf and dictate it to not install 
>>> packages that are younger then $((today - 7 )) for example.
>>> If not directly possible, any other ways to accomplishing it?
>>> Sure, building repos with snapshots would work here but I am
>>> looking for additional ways ...
>>>
>>
>> A couple ideas:
>>
>> 1. You could run weekly from a scrpt:
>>
>> yum --assumeno update
>>
>> which will create the transaction (but not install it) and save it to 
>> /tmp/ and then rerun that transaction week later:
>>
>> yum --assumeyes load-transaction 
>> /tmp/yum_save_tx.2021-11-14.13-54.FhQii3.yumtx
> 
> 
> That's an interesting approach. Not sure if this is still valid for EL8?
> Some tests doesn't show any transaction artifact. Maybe I need to dive 
> deeper ...
> 
> 
> 

Yes, you are correct, 'yum load-transaction' is not available in dnf on 
RHEL8

https://access.redhat.com/solutions/5576651

I'm still mostly using el7 so never noticed :-)

>> 2. Write a yum plugin to mask packages from the transaction sack that 
>> are less than 7 days old. How are your python skills?
> 
> That seems to be the cleanest solution. Lets see if I find time for 
> that. A quick look into repodata xml files shows that the build time
> is also there exposed ...
> 
> Thanks,
> Leon
>