[pacman-dev] [PATCH] pacman: don't nuke local repos with -Sc

[Allan McRae]

On 24/6/21 9:33 pm, Morgan Adamiec wrote:
> 
> 
> On 24/06/2021 09:25, Allan McRae wrote:
>> On 24/6/21 6:19 pm, Morgan Adamiec wrote:
>>>
>>>
>>> On 24/06/2021 06:38, Allan McRae wrote:
>>>> On 15/6/21 5:11 am, morganamilo wrote:
>>>>> When using a local repo as a cachedir  pacman -Scc or pacman -Sc
>>>>> without KeepCurrent will delete the repo database and packages
>>>>> resulting in a lost database and non functional pacman.
>>>>>
>>>>> So special case file:/// repos in cache to not get nuked and foce
>>>>> KeepCurrent on.
>>>>> ---
>>>>
>>>> This behaviour change is undocumented.
>>>>
>>>> I don't think we should do this for -Scc.  That is explicitly asking all
>>>> package files in cache directories to be removed, so that is what you get.
>>>>
>>>> I also am leaning towards this behaviour for -Sc being unexpected (even
>>>> if documented).  Pacman's job is really not to manage complex cache
>>>> set-ups and I'm not convinced this should be supported.
>>>>
>>>> Allan
>>>>
>>>
>>>
>>> I want this to go ahead, especially with -Scc. Otherwise -Scc can end up
>>> losing you your .db file, breaking pacman, the local repo's .db and all
>>> the build packages.
>>>
>>> This use case is not complex in my opinion. It's just adding one line to
>>> your pacman.conf to stop every single package being duplicated.
>>>
>>> If you're still against this do you have any alternative solutions in
>>> mind to handle this?
>>>
>>
>> Not using -Scc.   Why would you use that and expect it not to delete
>> packages?
>>
>> A
>>
> 
> Because I want everything deleted in the main /var/cache/pacman/pkg dir.
> 

Pacman asks what to do for each cache directory and you could say yes to
removing files from /var/cache/pacman/pkg/ and no for other cache
directories.   So that already achieves what you are doing without
adding a special case to the codebase.

Pacman's job is not to be a specialised cache cleaning utility.  Hence
why the suggestion of adding the ability to select how many versions of
each package is kept was implemented in paccache.

Allan