[Buildbot-commits] [SPAM] [Buildbot] #669: Clean up VC modes

[Buildbot]

#669: Clean up VC modes
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Reporter:  dustin       |       Owner:  dustin
    Type:  enhancement  |      Status:  new   
Priority:  critical     |   Milestone:  0.8.0 
 Version:  0.7.11       |    Keywords:        
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 Per an IRC conversation with ddunbar and dsal, there are really only two
 things users want to do with VC steps:

  * incremental updates/builds
  * full, clean builds

 Different VC's can implement these options with varying degrees of
 reliability.  What is now mode=copy works well for every supported VC
 *except* CVS, so mode=clobber is only really useful for CVS.  Bug #632 was
 about a more efficient way to implement clean builds in git, that was
 incorrectly filed under mode=update, because it's not really a copy.

 So the proposal is to have only *two* modes, common across and supported
 on all VCs:

  * clean
  * incremental

 These will be specified with the mode= parameter.  VCs can then have extra
 options to specify the implementation of that particular method.  So Git
 might have mode="incremental", incremental_by="clean" *and*
 mode="incremental", incremental_by="copy".

 Let's get this in the 0.8.0 release, since it's a pretty big behavior
 change (although it can be written in a backward-compatible fashion)

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Ticket URL: <http://buildbot.net/trac/ticket/669>
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