On 06/12/19 20:10, Andreas Sturmlechner wrote: > On Friday, 6 December 2019 20:47:31 CET Thomas Deutschmann wrote: >> On 2019-12-06 17:44, Mike Gilbert wrote: >>> 1. Keep the old version installed. >>> 2. Emit a confusing error message to the user since the use-dependency >>> on dev-python/example[python_targets_python2_7] cannot be resolved >>> with the latest visible version. >> I don't fully understand #2 to be honest but yes, you will be cut off >> from latest version at some point. Same in PHP. > Considering that above statement, I would expect a bit more humility than the > following: > >> Maybe someday one of those responsible will admit that this step was not >> a thoughtful and good decision and promise not to do it that way again >> and I'll get over it. Who knows. :) > Just so we're on the same page, a recent example of what some people > suggesting to keep py27 ad nauseam are asking users to deal with: > > > > # emerge -uDpv @world > > These are the packages that would be merged, in order: > > Calculating dependencies... done! > > Total: 0 packages, Size of downloads: 0 KiB > > WARNING: One or more updates/rebuilds have been skipped due to a dependency > conflict: > > dev-python/sphinx:0 > > (dev-python/sphinx-2.0.1:0/0::gentoo, ebuild scheduled for merge) conflicts > with > >=dev-python/ > sphinx-1.5.3[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/sphinxcontrib-websupport-1.1.0:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/cython-0.29.4:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/flask-babelex-0.9.3:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/testtools-2.3.0:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/pytest-runner-4.2:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/flask-babel-0.11.2-r2:0/0::gentoo, installed) > > > > > >=dev-python/ > sphinx-1.3.1[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/recommonmark-0.5.0_pre20181012-r1:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/testpath-0.3.1:0/0::gentoo, installed) > > > > > dev-python/sphinx[python_targets_python2_7(-),- > python_single_target_pypy(-),-python_single_target_python2_7(-)] required by > (dev-python/backports-functools-lru-cache-1.4-r1:0/0::gentoo, installed) > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/Babel-2.6.0:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/greenlet-0.4.15:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_python2_7(-),- > python_single_target_python3_5(-),-python_single_target_python3_6(-),- > python_single_target_python3_7(-)] required by (dev-python/flask-wtf-0.14.2- > r1:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-)] required by (dev-python/ > pexpect-4.2.1:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_python2_7(-),- > python_single_target_python3_5(-),-python_single_target_python3_6(-),- > python_single_target_python3_7(-)] required by (dev-python/python- > sqlparse-0.2.4:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/pyopenssl-19.0.0:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/pyasn1-0.4.2:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/flask-login-0.4.1:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/future-0.17.0:0/0::gentoo, installed) > > > > >=dev-python/ > sphinx-1.3.1[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_python2_7(-),- > python_single_target_python3_5(-),-python_single_target_python3_6(-),- > python_single_target_python3_7(-)] required by (dev-python/pyxattr-0.6.0- > r1:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/more-itertools-4.2.0-r1:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/utidylib-0.3-r2:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/traitlets-4.3.2:0/0::gentoo, installed) > > > > >=dev-python/ > sphinx-0.6[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/wtforms-2.2.1:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/numpydoc-0.9.1:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/virtualenv-16.0.0:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/rst-linker-1.11:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/nbformat-4.4.0:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_python2_7(-),- > python_single_target_python3_5(-),-python_single_target_python3_6(-),- > python_single_target_python3_7(-)] required by (dev-python/ > cairocffi-0.8.0:0/0::gentoo, installed) > > > > > >=dev-python/sphinx-1.3.1- > r1[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/qtconsole-4.3.1:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/ipyparallel-6.0.2-r1:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/jupyter_core-4.4.0:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/atomicwrites-1.1.5-r3:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/sphinxcontrib-github-alt-1.0:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/paramiko-2.4.2:0/0::gentoo, installed) > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/pallets-sphinx-themes-1.1.2:0/0::gentoo, installed) > > > > > dev-python/ > sphinx[python_targets_python2_7(-),python_targets_python3_6(-),- > python_single_target_pypy(-),-python_single_target_pypy3(-),- > python_single_target_python2_7(-),-python_single_target_python3_5(-),- > python_single_target_python3_6(-),-python_single_target_python3_7(-)] > required > by (dev-python/py-1.5.4:0/0::gentoo, installed) > > > > > dev-python/sphinx[python_targets_python2_7(-),- > python_single_target_pypy(-),-python_single_target_python2_7(-)] required by > (dev-python/futures-3.1.1:0/0::gentoo, installed) > > > You write like this is some unknown/undesirable failure mode of portage, when, in fact, just like any change of PYTHON_TARGETS or PYTHON_SINGLE_TARGET throws portage into a complete frenzy of confusion because of the tight knitting caused by the python eclasses.
Now, some proposals have been made to better tie-down of the latter situation here on this same list .. but let's just get over the fact that python interpreters and libraries are just going to be a bit messier for a few years, and we'll have to be a bit more careful when specifying dependencies whilst this transition period washes out. I really don't understand from anyone's point of view, the level of hysteria being whipped up over this.
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