sage -optional should not require write access to sage repo; e.g., people may want to check on what packages are installed system-wide

[williamstein]

wstein@sage:~$ /usr/local/bin/sage -optional
Using SAGE Server http://www.sagemath.org//packages
http://www.sagemath.org//packages/optional/list --> /usr/local/sage/tmp/list
[Errno 13] Permission denied: '/usr/local/sage/tmp/list'



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Error contacting http://www.sagemath.org//packages/optional/list. Try using an alternative server.
For example, from the bash prompt try typing

   export SAGE_SERVER=http://sage.scipy.org/sage/

then try again.



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Component: packages: standard

Issue created by migration from https://trac.sagemath.org/ticket/4873

[sagetrac-mabshoff]

comment:1

This is a dupe of #961

Cheers,

Michael