On Sat, Mar 22, 2008 at 11:00:00AM +0100, Felix Schwarz wrote: > Andreas Jung schrieb: >> The best thing is: try it out! Since your application has unittests, it >> should be easy to verify the functionality against a new version :-) > > The problem is more complicated unfortunately: I want to use z3c.rml which > needs zope.schema, zope.interface and other packages. Fedora currently > ships the old zope.interface (3.0) which seems to be too old for > zope.schema 3.4. > > I built RPM packages for myself but thought about submitting these to > Fedora. Therefore I have an undefined set of applications possible using > zope.interface 3.0 (and relying on this version). Even if my custom > application has a very good unit test coverage, this does not help the > Fedora Project. > > On the other hand if there was a commitment to a stable (downwards > compatible) API in 3.x, I think it would be much easier to get my RPMs into > Fedora.
AFAIK there is a commitment to backwards-compatible APIs in the 3.x series, with a time limit: APIs deprecated in version 3.x may be removed in version 3.(x+2). On the other hand, bugs happen, and sometimes people mistake internal implementation details for APIs. There's no substitute for actual testing. The safe way is to use a sandbox full of Zope 3 packages known to work together. There are multiple ways of getting one: svn checkout, tarball install, virtualenv, zc.buildout. Marius Gedminas -- "Nobody will ever need more than 640k RAM!" -- Bill Gates, 1981 "Windows 95 needs at least 8 MB RAM." -- Bill Gates, 1996 "Nobody will ever need Windows 95." -- logical conclusion
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