emacs version 24 breaks db schema generation

[rexissimus]

vistrails/db/bin/generate.py uses emacs to indent multi-line function arguments. This works in emacs 23, but breaks in emacs 24, probably due to this issue.

The workaround is currently to install emacs 23 before generating the schema.

Can we get rid of the emacs dependency? Perhaps using something like autopep8?

[remram44]

Should autopep8 be added to requirements.txt?

[rexissimus]

No, this is only for generating the schema. It is not needed for normal use.

[remram44]

The requirements already list Mako, unittest2 and nose which are not necessary for normal use. I'll split this into requirements.txt and dev-requirements.txt.

[rexissimus]

I think at least unittest2 shoud be in requirements.txt. It is used to test the binary builds.

mako/docutils/sphinx may be used by package developers, but this is not essential. They may also be used at runtime to generate dynamic packages, but we discourage that, so it may be good to leave this out.

nose does not seem to be used anywhere, but it was added for scikit-learn so maybe it is needed there?