Downgrade ipython to 7.16.x and jedi to 0.17.x to restore Python 3.6 support (ubuntu-bionic-standard)

[mkoeppe]

(from #31373)

Depends on #31373

CC: @kliem

Component: packages: standard

Author: Matthias Koeppe, Jonathan Kliem

Branch/Commit: 50084a8

Reviewer: Jonathan Kliem, Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/31476

[mkoeppe]

Branch: u/mkoeppe/downgrade_ipython_to_7_16_x_to_restore_python_3_6_support__ubuntu_bionic_standard_

[mkoeppe]

Commit: 140af6a

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

New commits:

3b7d7e5	upgrade jedi and ipython
b48a79b	Merge #31373
140af6a	build/pkgs/ipython: Downgrade to 7.16.1

[mkoeppe]

Dependencies: #31373

[kliem]

comment:4

This ticket breaks it completely.

I can't tab-complete anymore and if I try it get and awful error with a hard crash of sage.

[kliem]

comment:5

Attachment: Sage_crash_report.txt

Maybe this reason: ipython/ipython#12740

[kliem]

comment:6

Should downgrade jedi to 0.17.0 again.

I will open a seperate ticket to address the issues of #31373.

[kliem]

Changed commit from 140af6a to 468a828

[kliem]

Changed branch from u/mkoeppe/downgrade_ipython_to_7_16_x_to_restore_python_3_6_support__ubuntu_bionic_standard_ to u/gh-kliem/downgrade_ipython_to_7_16_x_to_restore_python_3_6_support__ubuntu_bionic_standard_

[kliem]

New commits:

468a828

downgrade jedi, as 0.18.0 is supported only by ipython 7.18.1 and higher