Re: [gentoo-admin] Newbie admin - help with mysql

[Brian Kroth]

Maurice E Johnson wrote:
>       But wouldn't an attempt to install an app dependent on mysql
>     potentially succeed eroniously? What I'm trying to see - and
>     education is always a good thing - is that in order to truely block
>     mysql, you would need something a bit more complex than an entree in
>     /etc/portage/package.provided.
>
>     Something in addition? like:
>
>     equery --nocolor hasuse mysql|awk '{print ">="$1}' >
>     </etc/portage/package.provided|/etc/portage/package.mask>
>
>     to avoid the consequences of basically saying that it's there when
>     it isn't?
>
>     I have read the man page, but it doesn't seem to address the
>     consequenses down the road for this condition.

I don't think it necessarily should.  By putting something in
packages.provided you're telling portage that you've taken care of that 
package manually, so it can assume that the dependency has been 
fulfilled.  If at some point down the road your system runs into
compile or dependency problems you know where to look.

Just to clarify the situation though - you're installing mysql manually,
and trying to emerge mytop or something else that generally needs mysql 
as a dependency, and you just want it to use your custom built one 
rather than ever emerging portage's stock mysql, correct?

Another option, although probably one that requires more work, would be 
to make an ebuild for your custom built mysql, include it in the local 
overlay and as an added precaution so that you know when a new version 
is out mask all higher versions.  Then "emerge <whatever it is that 
needs mysql>" should work just as if it were using the stock mysql. 
Actually you could probably do the second part in conjunction with 
packages.provided rather than creating an ebuild.

The downside is that whenever your dependent package's requirements 
changed you would most likely get errors about mysql being masked, and 
you'd have to do some conf tweaking again.  The upside is that you'd be 
notified and it wouldn't be emerging mysql.

>
>
> ------------------------------------------------------------------------
>
> Subject:
> Re: [gentoo-admin] Newbie admin - help with mysql
> From:
> Brian Kroth <bpkroth@××××.edu>
> Date:
> Thu, 21 Sep 2006 15:15:45 -0500
> To:
> gentoo-admin@l.g.o
>
> To:
> gentoo-admin@l.g.o
>
>
> Joseph Drake wrote:
>> I think this will result in failed dependencies.
>>
>> Johnson, Maurice E CTR NSWCDL-K74 wrote:
>>> try
>>>
>>> echo "dev-db/mysql" >>/etc/portage/package.mask
>
> Exactly, that's why /etc/portage/package.provided was created.  The
> previous solution was correct.  Namely:
>
>  >> You could try something like:
>  >>
>  >> echo "dev-db/mysql-4" >> /etc/portage/profile/package.provided
>
> "man portage" for more more info.
>
>>>
>>>
>>> -----Original Message-----
>>> From: Con Tassios [mailto:ct@××××××××.au] Sent: Wednesday, September
>>> 20, 2006 23:20
>>> To: gentoo-admin@l.g.o
>>> Subject: Re: [gentoo-admin] Newbie admin - help with mysql
>>>
>>> On Thu, 21 Sep 2006, Easy-Things Info wrote:
>>>
>>>
>>>> How do I tell gentoo that I don't want - under any circumstances
>>>>
>>> -
>>>> emerge to automatically install mysql?
>>>> I am using binaries and sources straight from mysql.com.
>>>>
>>>> I used -mysql in my USE in /etc/make.conf but it doesn't work
>>>>
>>>> If I try to emerge -p world it tells me that it will install
>>>>
>>> mysql
>>>> 4.1.x
>>>>
>>>
>>> You could try something like:
>>>
>>> echo "dev-db/mysql-4" >> /etc/portage/profile/package.provided
>>>
>>> --
>>> gentoo-admin@g.o mailing list
>>>
>>
>>

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