On Monday, March 19, 2012 12:20:18 PM Jakub Wilk wrote: > * Scott Kitterman <deb...@kitterman.com>, 2012-03-17, 14:29: > >Upon reflection, this could be better stated something like this: > > > >"The generated minumum dependency may be different than the lowest > >version currently supported. In such cases, X-Python-Version must > >still be specified if the generated dependency is not sufficient." > > > >To give a specific example, even though python3.2 is the only supported > >python3, for an arch all module, dh_python3 will generate a dependency > >of python3 >= 3.1.3-13. If the upstream code requires 3.2, then you > >still need to specify (in this example) X-Python3-Version. > > This is true, but I'm not sure why Python Policy needs to talk about > this. If it does, then probably appendix B would be the correct place. > Or a footnote. > > In general, how X(S)P(3)V is translated to dependency on python(3) > varies depending on which helper you use. A packaging helper can add a > dependency on "python(3) (>= $V)" for several reasons: > > 1) because the package declared "X(S)P(3)V: >= $V" [all helpers]; > > 2) because the package ships extension modules (or other files that > cannot be shared across versions) only for versions >= $V [all helpers]; > > 3) because the helper is implemented in such a way that it supports at > runtime only (a subset of) versions available at buildtime [dh_python2, > and sometimes python-central]; > > 4) because it generates maintainer scripts that need such version of > python(3) [dh_python2, dh_python3].
I think something like my first paragraph needs to go wherever it says X3-P-V can be omitted if all versions are supported, because it has to be clear that "all" isn't just all in Unstable on the day you're uploading. It's a function of how the dependencies are calculated. I think your helper specific information ought to go in appendix B. Does that make sense (to the extent anything less than a rewrite makes sense)? Scott K
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