In running doctests with my Debian installation of SAGE (where SAGE_ROOT
is set to /usr/lib/sagemath), it's been annoying that one needs to run the
tests as root so that SAGE can write to
- $SAGE_ROOT/tmp/test.log
- .doctest_filename.py in various directories of the SAGE install
- the directory .doctest in various directories of the SAGE install
Writing to the SAGE install itself is a good strategy when there may be
many SAGE installations on the system, since it prevents two SAGE installs
from both trying to write to /tmp/test.log (or whatever). But it's bad
for a multi-user setting with a single SAGE installation.
I think the right way to fix this is to add a SAGE_TESTDIR environment
variable, which defaults to SAGE_ROOT/tmp if it is not set, and have all
these test-related files get written inside SAGE_TESTDIR. The SAGE
wrapper script on Debian would set SAGE_TESTDIR to something like
~/.sage/tests (if it isn't set already by the user).
Thoughts?
-Tim Abbott
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