How to upgrade Python 2.6 to 2.7

[dafi]

I can't select python version

Code: Select all

eselect python set python2.7
!!! Error: Couldn't source /usr/share/eselect/modules/python.eselect
Call stack:
    * do_action (core.bash:83)
    * main (eselect:191)
exiting

any ideas ?

[West201]

Thanks for guide

I was just starting to look for this. Although is there a way to tell which version of Python I already have ? I installed Gentoo 4 days ago.

[m4chine]

Thanks for guide

I was just starting to look for this. Although is there a way to tell which version of Python I already have ? I installed Gentoo 4 days ago.

Yes -

Code: Select all

eselect python list

[kernelOfTruth]

thanks for this thread to Helena & the answers to everyone who contributed

*goes off to system-maintenance"

[PsykoNerd]

How do I update an specific package with emerge, I know I can, but how ?

[dianemcmillan]

@mikegpitt
Thanks for providing the indication of these steps. Now I know the explanation on those steps.

[idoerg]

EDIT revised to quickly display the solution without having to search the entire topic

In the stable tree python 2.7 has been available for some time. However the upgrade from 2.6 needs to be performed in a certain manner.

Immediately after emerging python 2.7 a message is displayed by portage about running python-updater. This message does not list all steps required which are:

Code: Select all

eselect python set python2.7 
python-updater 
emerge --depclean 
revdep-rebuild

NOTE of course the last two lines may affect other packages as well!

So I tried that, but when I try python-update, packages seem to still have 2.6 dependencies, and won't build due to slot conflicts. For example:

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(dev-python/sphinx-1.2::gentoo, ebuild scheduled for merge) pulled in by
    dev-python/sphinx[python_targets_python2_6(-)?,python_targets_python2_7(-)?,python_targets_python3_2(-)?,python_targets_python3_3(-)?,-python_single_target_python2_6(-),-python_single_target_python2_7(-),-python_single_target_python3_2(-),-python_single_target_python3_3(-)] required by (dev-python/pexpect-3.0::gentoo, ebuild scheduled for merge)
    dev-python/sphinx[python_targets_python2_6(-)?,python_targets_python2_7(-)?,python_targets_python3_2(-)?,python_targets_python3_3(-)?,-python_single_target_python2_6(-),-python_single_target_python2_7(-),-python_single_target_python3_2(-),-python_single_target_python3_3(-)] required by (dev-python/matplotlib-1.3.1::gentoo, ebuild scheduled for merge)

I tried installing 2.6 before running python-updater, but that didn't help.

[KAMIKAZE_]

Do we really need this sticked in 2018 ?