The Mercurial version is given as unknown by yolk:

$ yolk -l | grep mercurial
mercurial       - unknown      - active

Even when the value is present in the metadata:

$ yolk -M mercurial | egrep '^version:'
version: 1.2.1

Any chance of a fix?

I'm using yolk with...

$ yolk -l | grep setuptools
setuptools      - 0.6c9        - active

and...

$ python --version
Python 2.6.2

Thanks,

-- 
Sean B. Palmer, http://inamidst.com/sbp/