#6424 NORM Never A: avoid duplicating space when downloading & installing bundles

[Zarro Boogs per Child]

#6424: avoid duplicating space when downloading & installing bundles
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  Reporter:  sj      |       Owner:  tomeu         
      Type:  defect  |      Status:  new           
  Priority:  normal  |   Milestone:  Never Assigned
 Component:  distro  |     Version:                
Resolution:          |    Keywords:                
  Verified:  0       |    Blocking:                
 Blockedby:          |  
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Comment(by Eben):

 This is just another incarnation of your typical speed/memory tradeoff.  I
 think that, for our scenario, re-bundling on demand isn't necessarily a
 bad idea.

 However, I wouldn't necessarily implement it in exactly that fashion.  I'm
 pretty sure we want to do lazy deletion of most files when we aren't
 critically in need of space.  Depending on the size of the bundle, we may
 just keep the file around using ~2x the space, with the clear idea that it
 can be among the first things to be removed when more space is in fact
 needed.  Depending on how we choose to do this, we may even make it appear
 that it's installed only once to the end user, by subtracting the size of
 the lazy-deleted files from the total used space when reporting on the
 laptops capacity (an "effective free space" measure, in a way).

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Ticket URL: <http://dev.laptop.org/ticket/6424#comment:3>
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