[tbb-bugs] #31564 [Applications/Tor Browser]: Android bundles based on ESR 68 are not built reproducibly anymore

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#31564: Android bundles based on ESR 68 are not built reproducibly anymore
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 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-9.0-must-nightly,                |  Actual Points:
  TorBrowserTeam201908, GeorgKoppen201908        |
Parent ID:  #30324                               |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by sisbell):

 Looks like Signal created an apkdiff script that ignores resources.arsc

 https://github.com/signalapp/Signal-Android/blob/master/apkdiff/apkdiff.py

 Briar went the route of a deterministic file system

 https://code.briarproject.org/briar/briar-
 reproducer/commit/22d04ff8bba956ec9647fd583ec655df691e15e5

 Are either of these approaches workable for us?

 A third route is to build and patch the gradle plugin ourselves but I have
 been unable to find the elusive change-id that google mentions.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31564#comment:13>
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