Python 2 is Dead, Long Live Python 3 (T8207)

[celticmagic]

Beatrice T. Meyers (#DataDrake), 2019-08-04 20:43:54 UTC

Let's use this task to keep track of things stuck on Python 2 so that we know when we can retire Python 2 or whether or not to deprecate them.

Stuck on Python 2:

• kodi 18.x (once Kodi 19.1 is out on flathub, I suggest we officially deprecate kodi from the repo)
• samba 4.9.x -> Updated to 4.10.x which supports Python 3 (but the Python bindings are disabled for now)
• duplicity (waiting for version 0.8.x to be promoted as stable)

Planned Deprecation:

• spyder (python 2 version only)
• nautilus-admin

Solus Software:

• Switch to GNOME SC and KDE Discover (PoC ready)
  • Retire solus-sc and remove it from the package repo
• Ensure that KDE Discover can use PackageKit to replace LDM functionality (PoC ready)
• Port eopkg to py3 and compile it with nuitka (PoC ready and in testing)
• Test that GNOME SC and KDE Discover work as expected with eopkg py3 PK backend
• Test that KDE Discover can use the eopkg py3 PackageKit backend to replace LDM functionality (PoC ready)
• Port ypkg to py3 and compile it with nuitka (Done, in production on build server)
• Switch to using the Calamares installer (Done)
• Internal scripts rewrites (Done)

Python 2 Packages:

• alabaster
• android-tools
• autopep8
• bro
• bup
• bzr Breezy v2 #6104
• caribou
• catbox Deprecate catbox #5886
• cherrytree
• chrome-gnome-shell
• claws-mail
• comar
• comar-api
• cycler
• cython
• dia Deprecate ancient gnome libs #3201
• displaycal
• doflicky
• evemu
• firewalld
• flake8
• fslint
• gdal
• gimp - now uses python-gobject instead of python-gobject2 Gimp 3.0 & friends #5825
• git-cola
• gnome-doc-utils
• gnubg
• gourmet
• gpgme
• gst-python-0.10
• gwyddion
• ibus-anthy
• kaa-base
• kaa-metadata
• keybinder
• kicad
• kodi
• kvirc
• lash
• ledger
• libblockdev
• libboost
• libbytesize
• libcaca
• libgpod
• libieee1284
• liblouis
• libpeas
• libproxy
• libuser
• libxml2
• libxslt
• linux-tools
• lldb
• llvm-clang (.py files are py2)
• mailnag
• matplotlib
• mccabe
• mcomix
• mozjs
• mozjs38
• mutagen
• mypaint
• natron
• nautilus-folder-icons
• nautilus-python
• newt
• nmap
• notify-python
• notmuch
• opencolorio
• opencv
• openimageio
• pam-wrapper
• pbr
• pep8
• piksemel
• pip Python3 debundle pip & setuptools #5511
• pisi pisi: Make eopkg.bin the default #5820
• playonlinux
• postgresql
• printrun
• psycopg2
• ptyprocess
• pulseaudio-dlna
• py
• pycodestyle
• pyenchant
• pyflakes
• pygments
• pygoocanvas
• pygtksourceview
• pyorbit
• pyparsing (update blocked)
• pytest-runner (update blocked)
• python
• python-absl-py
• python-appdirs
• python-argparse
• python-asn1
• python-asn1crypto
• python-asn1-modules
• python-atomicwrites
• python-attrs (Update blocked)
• python-automat
• python-babel
• python-backports
• python-backports_abc
• python-backports.functools_lru_cache
• python-backports.ssl_match_hostname
• python-bcrypt
• python-beautifulsoup4
• python-blinker
• python-bottle
• python-cairo Replace python3-cairo with python-cairo #5891
• python-certifi
• python-cffi
• python-chardet
• python-configobj
• python-configparser
• python-constantly
• python-contextlib2
• python-coverage (update blocked)
• python-cparser
• python-cryptography
• python-dateutil
• python-dbus
• python-decorator
• python-distutils-extra
• python-docker-pycreds
• python-docopt
• python-docutils
• python-entrypoints
• python-enum34
• python-enum-compat
• python-evdev a0acaf4
• python-fastimport
• python-faulthandler
• python-filelock
• python-flaky
• python-freezegun
• python-funcsigs
• python-functools32
• python-futures
• python-genty
• python-geoip Deprecate unused python packages #3292
• python-gobject
• python-gobject2
• python-gtk2
• python-httplib2
• python-hyperlink
• python-hypothesis (update blocked)
• python-idna
• python-imagesize
• python2-importlib-metadata
• python-importlib-resources (update blocked)
• python-incremental
• python-inotify
• python-ipaddress
• python-itsdangerous
• python-jedi
• python-jinja
• python-jsonschema
• python-kiwisolver
• python-lhafile
• python-lxml
• python-m2r
• python-magic
• python-markupsafe
• python-mistune
• python-mock (update blocked)
• python-monotonic
• python-more-itertools (update blocked)
• python-netaddr
• python-netifaces
• python-nose
• python-notify2
• python-oauthlib
• python-openssl
• python-osinfo
• python2-packaging
• python-parsimonious
• python-parso
• python-parted Deprecate os-installer and drop python2 support for several packages #3087
• python-pathlib2
• python-pexpect
• python-pillow
• python2-pluggy
• python-polib
• python-pretend
• python-protobuf
• python-psutil
• python-pycurl Deprecate os-installer and drop python2 support for several packages #3087
• python-pyglet
• python-pyhamcrest
• python-pyjwt
• python-pylibacl
• python-pyliblzma
• python-pyserial
• python-pyside
• python-pyside-tools
• python-pysocks
• python2-pytest
• python-pytest-cov
• python-pytest-flake8
• python-pytest-mock
• python-pytz
• python-pyusb
• python-pywavelets
• python-pyxattr
• python-qt5
• python-qtwebengine
• python-reportlab
• python-requests
• python-requests-mock
• python-requests-oauthlib
• python-scandir
• python-sdl2
• python-service-identity
• python-setproctitle
• python-setuptools Python3 debundle pip & setuptools #5511
• python-setuptools-git
• python2-setuptools-scm
• python-singledispatch
• python-sip
• python-six
• python-slip
• python-snowballstemmer
• python-soupsieve
• python-sphinx
• python-sphinxcontrib-websupport
• python-sphinx-rtd-theme
• python-sqlalchemy
• python-subprocess32
• python-texttable
• python-toml
• python-tornado
• python-tox
• python-twisted
• python-typing
• python-urllib3
• python-urlgrabber
• python-wcwidth
• python-websocket-client
• python-wheel
• python-wrapt
• python-zeroconf
• python-zipp (update blocked)
• python-zope.component
• python-zope.deferredimport
• python-zope.deprecation
• python-zope.event
• python-zope.hookable
• python-zope.interface
• python-zope.proxy
• python-zstd
• python2-numpy
• pyxdg
• pyyaml
• rpm
• ruamel.yaml
• sc-controller getsolus/solus-sc@3b2ca30
• scipy
• scons
• scribus
• shiboken
• soapysdr
• solus-sc ? - is being deprecated in 4.8
• suricata
• syncthing-gtk
• tensorflow
• trelby
• util-linux
• virtualenv
• volume_key
• vte2
• wxPython
• wxPython2
• xcb-proto
• youtube-dl-gui
• ypkg

[celticmagic]

Algent Albrahimi (#algent), 2019-10-07 07:32:05 UTC

Applications like this?

terminator
natron
kicad
catbox
duplicity
utopia-documents
mypaint
openimageio

[celticmagic]

DerRidda (#DerRidda), 2019-10-07 09:08:33 UTC

That list is not entirely correct, duplicity claims support for Python 2.7, 3.6 and 3.7.

[celticmagic]

Pierre-Yves (#kyrios123), 2019-10-07 09:43:22 UTC

! In T8207#159095, #DerRidda wrote:
That list is not entirely correct, duplicity claims support for Python 2.7, 3.6 and 3.7.

Current stable version of duplicity 0.7.x doesn't support python 3. Development version (0.8) however does.
No issue here, we can quietly wait until 0.8 is promoted to stable.

• calibre is an interesting one, it will allow us to drop support for multiple python2 packages.
• if someone managed to build Qt 4 Python (previously known as PySide2), we'll be able to discontinue python-pyside, shiboken and some more qt4 stuffs, so I guess this is an interresting one. I tried already but I never succeeded to get it to build and I couldn't find anyone to help so I gave up. ?

[celticmagic]

Alex Vorobyev (#aleksvor), 2019-10-07 09:50:47 UTC

! In T8207#159096, #kyrios123 wrote:
if someone managed to build Qt 4 Python (previously known as PySide2), we'll be able to discontinue python-pyside, shiboken and some more qt4 stuffs, so I guess this is an interresting one. I tried already but I never succeeded to get it to build and I couldn't find anyone to help so I gave up. ?

I tried it too (I would want to use PySide2 in Cutter, currently our Cutter build doesn't support Python plugins), but I failed to build it unfortunately. There was a strange error about bindings generation IIRC.
BTW, I tried to build it from all-in-one tarball (the one that includes pyside2, shiboken2 and other related stuff). I think maybe I could try building separate packages from separate tarballs.

[celticmagic]

Joey Riches (#joebonrichie), 2019-10-07 11:34:35 UTC

A bug in geos autotools scripts means it can't be switched to python3. Infact, support only explicitly goes as high as python 3.3, as seen here. Their cmake scripts do not support enabling python bindings at all.

[celticmagic]

Pierre-Yves (#kyrios123), 2019-10-13 10:40:31 UTC

Patches for calibre python 3 built have been submitted which allows to switch to python 3 or drop python 2 support in small dozen packages.

[celticmagic]

Beatrice T. Meyers (#DataDrake), 2020-01-06 02:14:14 UTC

Just a reminder that we should now be moving everything we can to Python 3 only, with no new packages for Python 2. The following packages related are exempt and should retain python 2 support until comar, eopkg, solus-sc, and ypkg are replaced:

• comar
• solus-sc
  • pisi (eopkg)
    • piksemel
    • python-pycurl
    • python-urlgrabber
  • python-gobject
• ypkg
  • python-configobj
    • python-six
  • pyyaml
  • ruamel_yaml

[celticmagic]

Beatrice T. Meyers (#DataDrake), 2020-01-06 08:21:52 UTC

And os-installer

• os-installer
  • python-cairo
  • python-geoip
  • python-gobject
  • python-parted

See also deps of deps.

[celticmagic]

Jacob (#Jacalz), 2020-01-06 08:54:25 UTC

An issue I have been facing was that I couldn’t get Inkscape to find scour if I built it using Python 3, only when using Python 2. I don’t know if it is something strange with Inkscape or Scour though. Scour does have python 3 support so we can just switch it over if someone makes Inkscape pick it up correctly...

[celticmagic]

Beatrice T. Meyers (#DataDrake), 2020-01-06 09:09:47 UTC

#Jacalz scour and its deps would also need to be built for python 3...

[celticmagic]

Jacob (#Jacalz), 2020-01-06 16:20:50 UTC

! In T8207#162808, #DataDrake wrote:
#Jacalz scour and its deps would also need to be built for python 3...

Yes I know, but the issue is that Inkscape currently uses Python2 and won't pick up the python 3 version. Hopefully the 1.0 release of inkscape can bring some light on to fixing this, it does switch to python3 from what I have heard.

This is also blocked by inkscape in other words...

[celticmagic]

Kim Forsman (#endumiuz), 2020-01-12 10:25:31 UTC

duplicity (waiting for version 0.8.x to be promoted as stable)

It seems to be considered stable now: https://code.launchpad.net/duplicity http://duplicity.nongnu.org/

[celticmagic]

Pierre-Yves (#kyrios123), 2020-04-08 17:28:52 UTC

! In T8207#159107, #joebonrichie wrote:
A bug in geos autotools scripts means it can't be switched to python3. Infact, support only explicitly goes as high as python 3.3, as seen here. Their cmake scripts do not support enabling python bindings at all.

Does anyone know what requires python to be enabled in geos ?

qgis, gdal, python-shapely are already using python 3 so if they really needed it, it would be an issue already.

libspatialite can be built against geos without enabling python.