Gentoo upgrading portage problem

[Olivia]

Some help me! I tried to install a jpeg library via ebuild and came across with problem. The package required EAPI3. I then sync and it notified me that the profile is not updated. I performed eselect profile set1 which was the match for default/linux/amd64/10.0 but it did not helped. Also informed me that
The new portage version should be installed. After that I performed emerge portage and it gave me the below result.

Calculating dependencies... done!

!!! All ebuilds that could satisfy "app-shells/bash-completion" have been masked.
!!! One of the following masked packages is required to complete your request:
- app-shells/bash-completion-1.2 (masked by: EAPI 3)

The current version of portage supports EAPI '2'. You must upgrade to a
newer version of portage before EAPI masked packages can be installed.

[Elijah]

You seem to have a big issue. I don’t think so that there is an appropriate answer to solve this. The only thing we can do is try different possible ways. Try unmasking the EAPI 3. After masking it won’t trouble shoot such errors. After that, update the portage first. I am recommending you to update portage because updation fix bugs. After updating, install the portage w/o dependencies 'emerge -avO portage'. If the python is out of date then it will be updated. Remember that python upgrade depends on app-shells/bash-completion.

[Luis234]

If you get the below code then it indicates that you have not installed the jpeg library has not been installed properly.

Back1 ~ # USE="-bash-completion" emerge -1 portage

* IMPORTANT: 6 news items need reading for repository 'gentoo'.
* Use eselect news to read news items.


These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild N ] dev-libs/libffi-3.0.9 USE="-debug -static-libs -test"
[ebuild U ] sys-devel/automake-wrapper-4 [3-r1]
[ebuild N ] app-arch/xz-utils-4.999.9_beta USE="nls threads -static-libs"
[ebuild NS ] sys-devel/automake-1.11.1 [1.9.6-r2, 1.10.2]
[ebuild U ] sys-apps/sandbox-2.4 [1.2.18.1-r2] USE="(multilib%*)"
[ebuild N ] virtual/libffi-0
[ebuild U ] sys-devel/libtool-2.2.6b [1.5.26] USE="-test%"
[ebuild U ] app-admin/eselect-1.2.11 [1.0.11-r1] USE="-bash-completion*"
[uninstall ] app-admin/eselect-news-20080320
[blocks b ] app-admin/eselect-news ("app-admin/eselect-news" is blocking app-admin/eselect-1.2.11)
[ebuild N ] app-admin/eselect-python-20100321
[ebuild NS ] dev-lang/python-2.6.6-r1 [2.5.2-r7] USE="berkdb gdbm ipv6 ncurses readline ssl threads (wide-unicode) xml -build -doc -examples -sqlite -tk -wininst"
[ebuild U ] sys-apps/portage-2.1.9.25 [2.1.6.13] USE="(ipc%*) -python3%"
*** Portage will stop merging at this point and reload itself,
then resume the merge.
[blocks B ] app-arch/lzma-utils ("app-arch/lzma-utils" is blocking app-arch/xz-utils-4.999.9_beta)
[blocks B ] <sys-apps/portage-2.1.9 ("<sys-apps/portage-2.1.9" is blocking dev-lang/python-2.6.6-r1)

* Error: The above package list contains packages which cannot be
* installed at the same time on the same system.

('installed', '/', 'app-arch/lzma-utils-4.32.7', 'nomerge') pulled in by
app-arch/lzma-utils required by ('ebuild', '/', 'sys-devel/libtool-2.2.6b', 'merge')

('ebuild', '/', 'app-arch/xz-utils-4.999.9_beta', 'merge') pulled in by
app-arch/xz-utils required by ('ebuild', '/', 'sys-apps/sandbox-2.4', 'merge')

('ebuild', '/', 'dev-lang/python-2.6.6-r1', 'merge') pulled in by
dev-lang/python:2.6 required by ('ebuild', '/', 'sys-apps/portage-2.1.9.25', 'merge')

[Aleksandra]

I am not quite sure after reading your question that you masked the portage or you masked the EAPI3. According to me I am not quite concerned but I think you might have to unmerge some things until you get installed latest portage. If your latest version is not working then try installing the lower version and upgrade it. Try installing lower version only if you get the below error:

Back1 ~ # emerge -p '<portage-2.1.6.7'
>>> --pretend disables --ask... removing --ask from options.

These are the packages that would be merged, in order:

Calculating dependencies... done!

emerge: there are no ebuilds to satisfy "<sys-apps/portage-2.1.6.7".

and when I tried: 
Back1 ~ # emerge -p '=portage-2.1.6.7'
>>> --pretend disables --ask... removing --ask from options.

These are the packages that would be merged, in order:

Calculating dependencies... done!

!!! All ebuilds that could satisfy "=sys-apps/portage-2.1.6.7" have been masked.
!!! One of the following masked packages is required to complete your request:
- sys-apps/portage-2.1.6.7 (masked by: profile)

[kraal]

Follow the steps that I have suggested below. I am sure it will help. After the following steps, install your jpeg library.

The steps are:

First emerge older version of portage to update python 2.6 version using the below command. This will unmerge the packages that blocks updating and update of portage will be done successfully.

USE="-bash-completion" emerge -1 portage-2.1.8.3

python-updater

Then emerge latest portage version

emerge portage

And last update world to refresh system

emerge -Du world

[Deep123]

I think the question you have mentioned is incomplete. You have not mentioned proper version and the steps that you have used to install jpeg library. I recommend you to follow the Gentoo Handbook for appropriate assistance and guidance. In that book refer the Masked Packages section. If you did not found necessary help then visit to official website and get assistance or masked packages and installation.