[gentoo-user] Installing 2 version-different libs in the same time

[gentoo-user] Installing 2 version-different libs in the same time

[Frank Schwidom]

Hi,

I have an conflict wth 2 Versions of Readline:

  (sys-libs/readline-5.2_p12-r1::gentoo, installed) pulled in by
    =sys-libs/readline-5* required by (dev-lang/ghc-6.8.2::gentoo, installed)

  (sys-libs/readline-6.2_p1::gentoo, ebuild scheduled for merge) pulled
    in by =sys-libs/readline-6.2_p1

Is ts possible to install both libraries in the same time?

It seems, that the lib-system is prepared for such situations,
 because this links allows to define defaults for different
 version stages.

lrwxrwxrwx 1 root root     16 15. Jul 2010  libreadline.so -> libreadline.so.5
lrwxrwxrwx 1 root root     18 15. Jul 2010  libreadline.so.5 -> libreadline.so.5.2
-r-xr-xr-x 1 root root 201668  6. Dez 2008  libreadline.so.5.2

Here could exist an further lib.

The question ist, how knows an program, to use which lib.

Can i compile an new program, which uses an explicit new lib, and
 keep the default-definition of the readline libs untouched?

Have I any chance to solve this problem without loosing one lib?

Regards

Re: [gentoo-user] Installing 2 version-different libs in the same time

[Kerin Millar]

On 16/02/2013 08:36, Frank Schwidom wrote:
> Hi,
>
> I have an conflict wth 2 Versions of Readline:
>
>    (sys-libs/readline-5.2_p12-r1::gentoo, installed) pulled in by
>      =sys-libs/readline-5* required by (dev-lang/ghc-6.8.2::gentoo, installed)
>
>    (sys-libs/readline-6.2_p1::gentoo, ebuild scheduled for merge) pulled
>      in by =sys-libs/readline-6.2_p1
>
> Is ts possible to install both libraries in the same time?

Yes. Portage can support different versions side-by-side if the ebuild 
makes use of the SLOT variable. For instance, I have 
sys-libs/readline-6.2_p1 installed and attempting to install readline-5* 
yields:

Calculating dependencies... done!
[ebuild  NS    ] sys-libs/readline-5.2_p14:5 [6.2_p1:0] 2,024 kB

Note that this isn't a downgrade in so far as 6.2_p1 won't be removed. 
It's a new, slotted instance of the package. No problem there.

>
> It seems, that the lib-system is prepared for such situations,
>   because this links allows to define defaults for different
>   version stages.
>
> lrwxrwxrwx 1 root root     16 15. Jul 2010  libreadline.so -> libreadline.so.5
> lrwxrwxrwx 1 root root     18 15. Jul 2010  libreadline.so.5 -> libreadline.so.5.2
> -r-xr-xr-x 1 root root 201668  6. Dez 2008  libreadline.so.5.2
>
> Here could exist an further lib.
>
> The question ist, how knows an program, to use which lib.

The required libraries are defined in the NEEDED fields in the ELF 
binary's dynamic segment section. You may use tools such as ldd to 
inspect the dependencies.

>
> Can i compile an new program, which uses an explicit new lib, and
>   keep the default-definition of the readline libs untouched?

In many cases, yes. Another approach is to export LD_LIBRARY_PATH when 
running an application so that it finds a particular library in a 
particular directory. However ...

> Have I any chance to solve this problem without loosing one lib?
>

You are overdue an emerge --sync. Do that before contemplating jumping 
through hoops.

Cheers,

--Kerin

Re: [gentoo-user] Installing 2 version-different libs in the same time

[Frank Schwidom]

On Sat, Feb 16, 2013 at 09:13:13AM +0000, Kerin Millar wrote:
> On 16/02/2013 08:36, Frank Schwidom wrote:
> > Hi,
> >
> > I have an conflict wth 2 Versions of Readline:
> >
> >    (sys-libs/readline-5.2_p12-r1::gentoo, installed) pulled in by
> >      =sys-libs/readline-5* required by (dev-lang/ghc-6.8.2::gentoo, installed)
> >
> >    (sys-libs/readline-6.2_p1::gentoo, ebuild scheduled for merge) pulled
> >      in by =sys-libs/readline-6.2_p1
> >
> > Is ts possible to install both libraries in the same time?
> 
> Yes. Portage can support different versions side-by-side if the ebuild 
> makes use of the SLOT variable. For instance, I have 
> sys-libs/readline-6.2_p1 installed and attempting to install readline-5* 
> yields:
> 
> Calculating dependencies... done!
> [ebuild  NS    ] sys-libs/readline-5.2_p14:5 [6.2_p1:0] 2,024 kB
> 
> Note that this isn't a downgrade in so far as 6.2_p1 won't be removed. 
> It's a new, slotted instance of the package. No problem there.

hangeLog:  Stabilize old ABI SLOT version.
readline-4.3_p5.ebuild:SLOT="${PV:0:1}"
readline-5.2_p14.ebuild:SLOT="${PV:0:1}"
readline-6.1.ebuild:SLOT="0"
readline-6.1_p2.ebuild:SLOT="0"
readline-6.2.ebuild:SLOT="0"
readline-6.2_p1.ebuild:SLOT="0"
readline-6.2_p1-r1.ebuild:SLOT="0"
readline-6.2_p4.ebuild:SLOT="0"

it seems to be that in my case readline-5.2_p12-r1 ist installed under SLOT 0.
can i override the slot-variable ?

Regards

Re: [gentoo-user] Installing 2 version-different libs in the same time

[Kerin Millar]

On 16/02/2013 11:47, Frank Schwidom wrote:
> On Sat, Feb 16, 2013 at 09:13:13AM +0000, Kerin Millar wrote:
>> On 16/02/2013 08:36, Frank Schwidom wrote:
>>> Hi,
>>>
>>> I have an conflict wth 2 Versions of Readline:
>>>
>>>     (sys-libs/readline-5.2_p12-r1::gentoo, installed) pulled in by
>>>       =sys-libs/readline-5* required by (dev-lang/ghc-6.8.2::gentoo, installed)
>>>
>>>     (sys-libs/readline-6.2_p1::gentoo, ebuild scheduled for merge) pulled
>>>       in by =sys-libs/readline-6.2_p1
>>>
>>> Is ts possible to install both libraries in the same time?
>>
>> Yes. Portage can support different versions side-by-side if the ebuild
>> makes use of the SLOT variable. For instance, I have
>> sys-libs/readline-6.2_p1 installed and attempting to install readline-5*
>> yields:
>>
>> Calculating dependencies... done!
>> [ebuild  NS    ] sys-libs/readline-5.2_p14:5 [6.2_p1:0] 2,024 kB
>>
>> Note that this isn't a downgrade in so far as 6.2_p1 won't be removed.
>> It's a new, slotted instance of the package. No problem there.
>
> hangeLog:  Stabilize old ABI SLOT version.
> readline-4.3_p5.ebuild:SLOT="${PV:0:1}"
> readline-5.2_p14.ebuild:SLOT="${PV:0:1}"
> readline-6.1.ebuild:SLOT="0"
> readline-6.1_p2.ebuild:SLOT="0"
> readline-6.2.ebuild:SLOT="0"
> readline-6.2_p1.ebuild:SLOT="0"
> readline-6.2_p1-r1.ebuild:SLOT="0"
> readline-6.2_p4.ebuild:SLOT="0"
>
> it seems to be that in my case readline-5.2_p12-r1 ist installed under SLOT 0.
> can i override the slot-variable ?

I gather that you've synced so if you run emerge -a1 '=readline-5*', 
that should install the latest 5.2_p14 ebuild which is appropriately 
slotted.

Note that the latest stable version of ghc (6.12.3-r2) doesn't depend on 
the old version of readline anyway. The main issue was that your portage 
tree was out of date. Now that has been dealt with, I think you just 
need to upgrade as normal. You can uninstall the old instance of ghc 
before allowing it to re-install, in case it still blocks.

Cheers,

--Kerin

Re: [gentoo-user] Installing 2 version-different libs in the same time

[Frank Schwidom]

On Sat, Feb 16, 2013 at 12:12:30PM +0000, Kerin Millar wrote:
> On 16/02/2013 11:47, Frank Schwidom wrote:
> > On Sat, Feb 16, 2013 at 09:13:13AM +0000, Kerin Millar wrote:
> >> On 16/02/2013 08:36, Frank Schwidom wrote:
> >>> Hi,
> >>>
> >>> I have an conflict wth 2 Versions of Readline:
> >>>
> >>>     (sys-libs/readline-5.2_p12-r1::gentoo, installed) pulled in by
> >>>       =sys-libs/readline-5* required by (dev-lang/ghc-6.8.2::gentoo, installed)
> >>>
> >>>     (sys-libs/readline-6.2_p1::gentoo, ebuild scheduled for merge) pulled
> >>>       in by =sys-libs/readline-6.2_p1
> >>>
> >>> Is ts possible to install both libraries in the same time?
> >>
> >> Yes. Portage can support different versions side-by-side if the ebuild
> >> makes use of the SLOT variable. For instance, I have
> >> sys-libs/readline-6.2_p1 installed and attempting to install readline-5*
> >> yields:
> >>
> >> Calculating dependencies... done!
> >> [ebuild  NS    ] sys-libs/readline-5.2_p14:5 [6.2_p1:0] 2,024 kB
> >>
> >> Note that this isn't a downgrade in so far as 6.2_p1 won't be removed.
> >> It's a new, slotted instance of the package. No problem there.
> >
> > hangeLog:  Stabilize old ABI SLOT version.
> > readline-4.3_p5.ebuild:SLOT="${PV:0:1}"
> > readline-5.2_p14.ebuild:SLOT="${PV:0:1}"
> > readline-6.1.ebuild:SLOT="0"
> > readline-6.1_p2.ebuild:SLOT="0"
> > readline-6.2.ebuild:SLOT="0"
> > readline-6.2_p1.ebuild:SLOT="0"
> > readline-6.2_p1-r1.ebuild:SLOT="0"
> > readline-6.2_p4.ebuild:SLOT="0"
> >
> > it seems to be that in my case readline-5.2_p12-r1 ist installed under SLOT 0.
> > can i override the slot-variable ?
> 
> I gather that you've synced so if you run emerge -a1 '=readline-5*', 
> that should install the latest 5.2_p14 ebuild which is appropriately 
> slotted.
> 
> Note that the latest stable version of ghc (6.12.3-r2) doesn't depend on 
> the old version of readline anyway. The main issue was that your portage 
> tree was out of date. Now that has been dealt with, I think you just 
> need to upgrade as normal. You can uninstall the old instance of ghc 
> before allowing it to re-install, in case it still blocks.

The current Version is '=readline-5*'. the only thing, i want to do
next, is to update portage, but portage wants to get a new python and
python a new readline(-6). My Problem is, to install a new readline (-6)
parallel to the old (-5).

Would it help, to change the SLOT Variable in the ebuild files, or
 is there any option or Variable to override the slot settings? 


Regards

Re: [gentoo-user] Installing 2 version-different libs in the same time

[Mike Gilbert]

On Sat, Feb 16, 2013 at 10:09 AM, Frank Schwidom <schwidom@gmx.net> wrote:
> On Sat, Feb 16, 2013 at 12:12:30PM +0000, Kerin Millar wrote:
>> On 16/02/2013 11:47, Frank Schwidom wrote:
>> > On Sat, Feb 16, 2013 at 09:13:13AM +0000, Kerin Millar wrote:
>> >> On 16/02/2013 08:36, Frank Schwidom wrote:
>> >>> Hi,
>> >>>
>> >>> I have an conflict wth 2 Versions of Readline:
>> >>>
>> >>>     (sys-libs/readline-5.2_p12-r1::gentoo, installed) pulled in by
>> >>>       =sys-libs/readline-5* required by (dev-lang/ghc-6.8.2::gentoo, installed)
>> >>>
>> >>>     (sys-libs/readline-6.2_p1::gentoo, ebuild scheduled for merge) pulled
>> >>>       in by =sys-libs/readline-6.2_p1
>> >>>
>> >>> Is ts possible to install both libraries in the same time?
>> >>
>> >> Yes. Portage can support different versions side-by-side if the ebuild
>> >> makes use of the SLOT variable. For instance, I have
>> >> sys-libs/readline-6.2_p1 installed and attempting to install readline-5*
>> >> yields:
>> >>
>> >> Calculating dependencies... done!
>> >> [ebuild  NS    ] sys-libs/readline-5.2_p14:5 [6.2_p1:0] 2,024 kB
>> >>
>> >> Note that this isn't a downgrade in so far as 6.2_p1 won't be removed.
>> >> It's a new, slotted instance of the package. No problem there.
>> >
>> > hangeLog:  Stabilize old ABI SLOT version.
>> > readline-4.3_p5.ebuild:SLOT="${PV:0:1}"
>> > readline-5.2_p14.ebuild:SLOT="${PV:0:1}"
>> > readline-6.1.ebuild:SLOT="0"
>> > readline-6.1_p2.ebuild:SLOT="0"
>> > readline-6.2.ebuild:SLOT="0"
>> > readline-6.2_p1.ebuild:SLOT="0"
>> > readline-6.2_p1-r1.ebuild:SLOT="0"
>> > readline-6.2_p4.ebuild:SLOT="0"
>> >
>> > it seems to be that in my case readline-5.2_p12-r1 ist installed under SLOT 0.
>> > can i override the slot-variable ?
>>
>> I gather that you've synced so if you run emerge -a1 '=readline-5*',
>> that should install the latest 5.2_p14 ebuild which is appropriately
>> slotted.
>>
>> Note that the latest stable version of ghc (6.12.3-r2) doesn't depend on
>> the old version of readline anyway. The main issue was that your portage
>> tree was out of date. Now that has been dealt with, I think you just
>> need to upgrade as normal. You can uninstall the old instance of ghc
>> before allowing it to re-install, in case it still blocks.
>
> The current Version is '=readline-5*'. the only thing, i want to do
> next, is to update portage, but portage wants to get a new python and
> python a new readline(-6). My Problem is, to install a new readline (-6)
> parallel to the old (-5).
>
> Would it help, to change the SLOT Variable in the ebuild files, or
>  is there any option or Variable to override the slot settings?
>

Try running this by itself:

emerge -1 sys-libs/readline:0 sys-libs/readline:5

That should upgrade readline-5.2_p12 to readline-6.2_p1 with SLOT=0,
and then install readline-5.4_p14 with SLOT=5.

You can then run your larger update, which should no longer produce
slot conflicts.

Re: [gentoo-user] Installing 2 version-different libs in the same time

[Frank Schwidom]

On Sat, Feb 16, 2013 at 10:48:26AM -0500, Mike Gilbert wrote:
> On Sat, Feb 16, 2013 at 10:09 AM, Frank Schwidom <schwidom@gmx.net> wrote:
> >
> > The current Version is '=readline-5*'. the only thing, i want to do
> > next, is to update portage, but portage wants to get a new python and
> > python a new readline(-6). My Problem is, to install a new readline (-6)
> > parallel to the old (-5).
> >
> > Would it help, to change the SLOT Variable in the ebuild files, or
> >  is there any option or Variable to override the slot settings?
> >
> 
> Try running this by itself:
> 
> emerge -1 sys-libs/readline:0 sys-libs/readline:5
> 
> That should upgrade readline-5.2_p12 to readline-6.2_p1 with SLOT=0,
> and then install readline-5.4_p14 with SLOT=5.
> 
> You can then run your larger update, which should no longer produce
> slot conflicts.
> 

Thanks, it worked.