At 12:50 PM 4/26/2007 -0500, Kumar McMillan wrote:

On 2/9/07, Phillip J. Eby <pje@telecommunity.com> wrote:

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At 09:29 AM 2/9/2007 -0500, Tres Seaver wrote:

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Using "|" as a separator for ORing TurboGear's requirements might look something like this (ignoring version numbers for simplicity):

install_requires = [ "SQLObject | SQLAlchemy", "Kid | Genshi", ], extras_require = { "fancy_tb": ["Paste"], }

+1 for the pipe symbol: to my eye, it means "pick the first of these", which is what you want.

It's also implementable; the tuple concept isn't. Eggs' requirements get stored in text files, so there has to be a pure-text representation possible.

[blast from the past] I'd like to use ORed requirements in a setup file but I don't see what version of setuptools this was introduced in. Does anyone know?

No, because it hasn't been done yet. :) I merely said it was implementable (in principle). Note that any project using this format won't be compatible with 0.6 versions of setuptools and will cause them to fail installation with parsing errors, unless there is some way to keep the alternatives hidden from older parsers.