[gentoo-user] Python 3.4.1

[gentoo-user] Python 3.4.1

[Philip Webb]

I've just installed  python-3.4.1  alongside  2.7.7  3.2.5-r6  3.3.5-r1 .
I've changed the lines in  make.conf  to

  USE_PYTHON="2.7 3.4"
  PYTHON_TARGETS="python2_7 python3_4"
  PYTHON_SINGLE_TARGET="python2_7"

'emerge -Np world' lists pkgs which mb updated, but none with 3.4.1 .
I have successfully remerged Vim with

  PYTHON_TARGETS="python2_7 (-python3_2) -python3_3 python3_4"

Without any other info, I would remerge all affected pkgs to use 3.4.1
& unmerge the earler versions of Python.
However, (1) I don't know how to list pkgs which use the Python flag
& (2) I don't know which pkgs might not be safe with 3.4.1 (Portage ? ).

Can anyone explain or point me to the relevant docs ?

-- 
========================,,============================================
SUPPORT     ___________//___,   Philip Webb
ELECTRIC   /] [] [] [] [] []|   Cities Centre, University of Toronto
TRANSIT    `-O----------O---'   purslowatchassdotutorontodotca

[gentoo-user] Re: Python 3.4.1

[James]

Philip Webb <purslow <at> ca.inter.net> writes:


> I've just installed  python-3.4.1  alongside  2.7.7  3.2.5-r6  3.3.5-r1 .
> I've changed the lines in  make.conf  to

>   USE_PYTHON="2.7 3.4"
>   PYTHON_TARGETS="python2_7 python3_4"
>   PYTHON_SINGLE_TARGET="python2_7"

I use 'eselect python list' to see what options you have.

Then I'd go to bugs.gentoo.org and poke around for any bug reports
on python-3.4.*

> 
> 'emerge -Np world' lists pkgs which mb updated, but none with 3.4.1 .
> I have successfully remerged Vim with
> 
>   PYTHON_TARGETS="python2_7 (-python3_2) -python3_3 python3_4"
> 
> Without any other info, I would remerge all affected pkgs to use 3.4.1
> & unmerge the earler versions of Python.

Use a -p to see what it proposes to do first....

> However, (1) I don't know how to list pkgs which use the Python flag
> & (2) I don't know which pkgs might not be safe with 3.4.1 (Portage ? ).

I would not unmerge any version just yet. If a package absolutely needs
python-3.4, it will let you know when you use a -p option.

I'd also keep python 2.7 around a while longer, just to be safe.
Keeping several old stable versions of python around is a good
idea, imho.


> Can anyone explain or point me to the relevant docs ?

Best thing is to look for bug reports on 3.4.* with python.
It is stable so there should not be anything significant.

Note: without a working version of python, you system may become
hosed, so be cautious with python as it is system critical.


hth,

James

Re: [gentoo-user] Re: Python 3.4.1

[Philip Webb]

141011 James wrote:
> Philip Webb <purslow <at> ca.inter.net> writes:
>> I've just installed  python-3.4.1  alongside  2.7.7  3.2.5-r6  3.3.5-r1 .
>> I've changed the lines in  make.conf  to
>>   USE_PYTHON="2.7 3.4"
>>   PYTHON_TARGETS="python2_7 python3_4"
>>   PYTHON_SINGLE_TARGET="python2_7"
> I use 'eselect python list' to see what options you have.

Google found :  http://www.odi.ch/weblog/posting.php?posting=674 ,
which suggests that, then 'eselect python set --python3 <n>',
where  n = 3  in my case ; I've done that.

> Then I'd poke around for any bug reports on python-3.4.*

That promises to be time-consuming, but thanks so far.

Anyone else have info or suggestions ?

-- 
========================,,============================================
SUPPORT     ___________//___,   Philip Webb
ELECTRIC   /] [] [] [] [] []|   Cities Centre, University of Toronto
TRANSIT    `-O----------O---'   purslowatchassdotutorontodotca

Re: [gentoo-user] Re: Python 3.4.1

[Frank Steinmetzger]

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On Sat, Oct 11, 2014 at 07:37:42PM -0400, Philip Webb wrote:
> 141011 James wrote:
> > Philip Webb <purslow <at> ca.inter.net> writes:
> >> I've just installed  python-3.4.1  alongside  2.7.7  3.2.5-r6  3.3.5-r1 .
> >> I've changed the lines in  make.conf  to
> >>   USE_PYTHON="2.7 3.4"
> >>   PYTHON_TARGETS="python2_7 python3_4"
> >>   PYTHON_SINGLE_TARGET="python2_7"
> > I use 'eselect python list' to see what options you have.
> 
> Google found :  http://www.odi.ch/weblog/posting.php?posting=674 ,
> which suggests that, then 'eselect python set --python3 <n>',
> where  n = 3  in my case ; I've done that.
> 
> > Then I'd poke around for any bug reports on python-3.4.*
> 
> That promises to be time-consuming, but thanks so far.
> 
> Anyone else have info or suggestions ?

I noticed the same. I’m somewhat eager about python 3.4 because blender
always wants the beedingest edgiest stuff around, and blender 2.7x requires
python 3.4, which in turn even wants me to unmask python-exec 2.9999.

Could this be profile induced? I do have PYTHON_TARGETS="python2_7 python3_3
python3_4" in make.conf, yet `emerge --info | grep TARGETS` still tells me
PYTHON_TARGETS="python2_7 python3_3"

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Re: [gentoo-user] Re: Python 3.4.1

[Mike Gilbert]

On Sun, Oct 12, 2014 at 11:26 AM, Frank Steinmetzger <Warp_7@gmx.de> wrote:
> On Sat, Oct 11, 2014 at 07:37:42PM -0400, Philip Webb wrote:
>> 141011 James wrote:
>> > Philip Webb <purslow <at> ca.inter.net> writes:
>> >> I've just installed  python-3.4.1  alongside  2.7.7  3.2.5-r6  3.3.5-r1 .
>> >> I've changed the lines in  make.conf  to
>> >>   USE_PYTHON="2.7 3.4"
>> >>   PYTHON_TARGETS="python2_7 python3_4"
>> >>   PYTHON_SINGLE_TARGET="python2_7"
>> > I use 'eselect python list' to see what options you have.
>>
>> Google found :  http://www.odi.ch/weblog/posting.php?posting=674 ,
>> which suggests that, then 'eselect python set --python3 <n>',
>> where  n = 3  in my case ; I've done that.
>>
>> > Then I'd poke around for any bug reports on python-3.4.*
>>
>> That promises to be time-consuming, but thanks so far.
>>
>> Anyone else have info or suggestions ?
>
> I noticed the same. I’m somewhat eager about python 3.4 because blender
> always wants the beedingest edgiest stuff around, and blender 2.7x requires
> python 3.4, which in turn even wants me to unmask python-exec 2.9999.
>
> Could this be profile induced? I do have PYTHON_TARGETS="python2_7 python3_3
> python3_4" in make.conf, yet `emerge --info | grep TARGETS` still tells me
> PYTHON_TARGETS="python2_7 python3_3"
>

At the moment, the python_target_python3_4 use flag is "stable-masked"
while the necessary packages are being stabilized. I know this is a
bit confusing, but it should not break anything. You can continue
using python3.3 for a while if you like.

For reference, see the following.

profiles/base/use.stable.mask
https://bugs.gentoo.org/show_bug.cgi?id=522322
https://bugs.gentoo.org/show_bug.cgi?id=524416

Once the stablereq bugs are resolved, I will remove the entry from
use.stable.mask.

In the meantime, you can unmask the pytho3_4 flag locally by creating
the following entries in /etc/portage.

mkdir -p /etc/portage/profile
echo 5 > /etc/portage/profile/eapi
echo -python_targets_python3_4 >> /etc/portage/profile/use.stable.mask