There is a way to configure Sage to use any Python3, e.g. to use python3.8 (assuming this is how your Python 3.8 executable is called)
./configure --with-python=python3.8 (and then of course you'd have to rebuild all the python packages of Sage) Needless to say, modifying /usr/bin/python3 is not a good idea - as you discovered. HTH Dima On Sun, Jan 3, 2021 at 10:12 AM Günter Rote <roteguen...@gmail.com> wrote: > > I am posting config.log. > > (I had linked /usr/bin/python3 to /usr/bin/python3.8, and then the sage build > went through without problems. > But then I ran into a different problem: I could not open a terminal window. > After a frightening hour, I > discovered the reason: /usr/bin/gnome-terminal could not find some library on > line 8: > #!/usr/bin/python3 > > import string > import subprocess > import sys > import random > > from argparse import ArgumentParser, SUPPRESS > from gi.repository import GLib, Gio > ... > > Now I have switched back /usr/bin/python3 to /usr/bin/python3.6, but now sage > won't build any more. > > > Matthias Koeppe schrieb am Samstag, 2. Januar 2021 um 19:55:15 UTC+1: >> >> On Saturday, January 2, 2021 at 9:45:58 AM UTC-8 roteg...@gmail.com wrote: >>> >>> Error building package python3-3.8.5 >>> [...] >>> >>> >>> I downloaded today the Branch "develop" >>> I am running under >>> Ubuntu 18.04 >>> >>> Could not make sage. >> >> >> From the log: >> >> *** WARNING: renaming "readline" since importing it failed: >> /home/rote/Dokumente/sage/local/lib/libreadline.so.8: undefined symbol: UP >> Python build finished successfully! The necessary bits to build these >> optional modules were not found: _dbm _gdbm _tkinter To find the necessary >> bits, look in setup.py in detect_modules() for the module's name. The >> following modules found by detect_modules() in setup.py, have been built by >> the Makefile instead, as configured by the Setup files: _abc atexit pwd time >> Following modules built successfully but were removed because they could not >> be imported: readline running build_scripts creating build/scripts-3.8 >> copying and adjusting >> /home/rote/Dokumente/sage/local/var/tmp/sage/build/python3-3.8.5/src/Tools/scripts/pydoc3 >> -> build/scripts-3.8 copying and adjusting >> /home/rote/Dokumente/sage/local/var/tmp/sage/build/python3-3.8.5/src/Tools/scripts/idle3 >> -> build/scripts-3.8 copying and adjusting >> /home/rote/Dokumente/sage/local/var/tmp/sage/build/python3-3.8.5/src/Tools/scripts/2to3 >> -> build/scripts-3.8 changing mode of build/scripts-3.8/pydoc3 from 644 to >> 755 changing mode of build/scripts-3.8/idle3 from 644 to 755 changing mode >> of build/scripts-3.8/2to3 from 644 to 755 renaming build/scripts-3.8/pydoc3 >> to build/scripts-3.8/pydoc3.8 renaming build/scripts-3.8/idle3 to >> build/scripts-3.8/idle3.8 renaming build/scripts-3.8/2to3 to >> build/scripts-3.8/2to3-3.8 Testing importing of various modules... ctypes >> module imported OK math module imported OK hashlib module imported OK crypt >> module imported OK Traceback (most recent call last): File "<string>", line >> 1, in <module> ModuleNotFoundError: No module named 'readline' readline >> module failed to import socket module imported OK zlib module imported OK >> sqlite3 module imported OK Error: One or more modules failed to import. >> >> This might be a problem with ncurses. >> >>> (I have python 3.8.0 installed anyway, but sage wants to install its own >>> more recent version, apparently.) >> >> >> Please post config.log, which will also explain why system python 3.8 was >> not accepted by Sage. >> >> > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-devel+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sage-devel/b0395701-5f00-4f34-ba4b-99c0cc7e973an%40googlegroups.com. -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/CAAWYfq3oDvYar44AgN5ZLsnO4Qm0%2BM9XWd0B0m%2BOqvcxVQSmfw%40mail.gmail.com.
