Sage Crash Report

[Maciej Dołęga]

Hi,

I encountered the following problems with sage:

1. It crashes when I am using tab auto completion - report attached.

2. Each time I want to use sage (by command 'sage') after restarting the system I need to type 'conda activate sage'. Otherwise command sage is not recognized ('-bash: sage: command not found').

I run Sage 9.2 on MacOS Big Sur 11.1 (Macbook Pro) which was installed by Conda.

Best,

Maciek

[Zachary Scherr]

1.  Did you by any chance accidentally update the jedi package? This is not really a sage problem, but ipython 7.19.0 is incompatible with the most recent version of jedi 0.18.0.  In your sage environment you can run "conda list" to see what packages you have installed.  If jedi 0.18.0 is listed then you can run "conda install jedi==0.17.2".

2.  That's kinda the whole point behind anaconda/miniconda.  You can put different python projects into different environments so that their dependencies don't contaminate one another.  If you want to have your sage environment always loaded you can activate it in your .zshrc file or you can do something like 

>> alias sage="whatever your path to the conda sage binary is".

[Maciek D]

ad. 1. It turned out that indeed I had installed the most recent version of jedi. Installing 0.17.2 fixed the problem - thank you very much!

ad. 2. I see - I am new to conda and I only used it to install sage; thanks for your explanation.

[Zachary Scherr]

Glad I can help.  This is another reason why these virtual environments are really useful! I have one environment for sage which I never try to update since I know that everything works.  Separately, I have my "main" environment that I update regularly, which will occasionally break things.  I broke ipython in that environment and then stumbled on https://github.com/ipython/ipython/issues/12740 which tracks this problem.

You can also feel free to experiment without fear of breaking things using conda.  For example, I see that you have sage installed with python 3.8.  If you wanted to try sage with python 3.9 without any fear you could do something like

conda create -n sage_python3.9 sage=9.2 python=3.9 -c conda-forge

and then you would have a new environment with sage 9.2 and python 3.9.  

Given how often Mac's new operating systems break everything, it's kind of amazing that conda has been so stable.  A lot of credit goes to Isuru Fernando and the work that he puts in on maintaining sage on conda forge.