Simon King wrote:
For some project, I need a recent version of sqlalchemy. Version 0.5.8
shipped with Sage is too old. On one of my laptops, with Sage version
6.1.1, I succeeded in installing sqlalchemy version 0.9.3. What I did
was "download sqlalchemy tarball, open it, and do python setup.py
install in a sage shell".
On another laptop with Sage 6.2.beta7, I tried the same (but with
sqlalchemy version 0.9.4, if that matters). Installation seemed to work,
but when I did
sage: import sqlalchemy
sage: sqlalchemy.__version__
it still showed me '0.5.8', not '0.9.4'.
Shooting into the dark, the *.pyc files of Sage's SQLAlchemy may be
"newer" than the *.py files from the 0.9.4 version.
That's bad, because the code that I developed on the first laptop relies
on a recent sqlalchemy version.
So, what could have gone wrong, and what should I do to finally make my
project work on *both* machines?
The easiest way is probably to upgrade Sage's version, by putting the
new tarball into the $SAGE_ROOT/upstream/ folder (as a .tar.bz2), and
updating the few files in $SAGE_ROOT/build/pkgs/sqlalchemy/ accordingly.
The spkg-install file is trivial; it just deletes the old version
installed and then calls 'python setup.py install'.
Afterwards run './sage -i sqlalchemy-0.9.4' or probably just './sage -f
sqlalchemy'.
[If that works, open a ticket and submit your changes.]
Or just do what Sage's spkg-install does, namely
rm -rf "$SAGE_LOCAL/lib/python/site-packages/SQLAlchemy*"
before installing SQLAlchemy 0.9.4 from a Sage subshell, as you did
before. But that way you might end up with again Sage's old version if
you later upgrade other parts of Sage.
-leif
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