[tahoe-dev] on backward-compatibility and new features

Brian Warner warner at lothar.com
Tue Nov 24 20:54:21 UTC 2009

Zooko Wilcox-O'Hearn wrote:
> Let me restate my use case now that you've persuaded me that  
> immutable dirs in backupdb is okay.  It's not that new features have  
> to be disabled by default, it's that:
> A user wants to know if she can upgrade to the new release of Tahoe- 
> LAFS, briefly glance at the NEWS.txt file, and continue to  
> interoperate with her old-version-using friends, without  
> significantly altering her workflow.

As a data point in favor of Zooko's argument, I noticed that the GPG
folks are discussing a similar issue. They enabled support for DSA2
(i.e. DSA with >1024bit keys) over three years ago, but are just now
considering whether to make --enable-dsa2 the default (to start
generating these new keys).



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