[tbb-bugs] #31568 [Applications/Tor Browser]: Update How to Create Gradle Dependencies

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#31568: Update How to Create Gradle Dependencies
-------------------------------------------------+-------------------------
 Reporter:  sisbell                              |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_revision
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-rbm, ff68-esr, tbb-9.0-must-     |  Actual Points:
  alpha, TorBrowserTeam201909                    |
Parent ID:  #30324                               |         Points:  0.25
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by sisbell):

 If we are running in a local container, the repo will always start out as
 empty unless there is something in the dependency list.  I was thinking if
 we want to reconstruct the list, we would just empty out the gradle-
 dependencies-list file. But that requires commenting out some sections of
 the build that deals with moving the repo directories around so is maybe
 not ideal either.

 Sure we can go with the approach of removing the maven.repo flag. I'll add
 that to documentation.

 Replying to [comment:18 gk]:
 > Replying to [comment:17 gk]:
 > > Okay, my idea does not work for `tor-android-service` we need to get
 back to the drawing board. :(
 >
 > I was actually wrong:
 > {{{
 > 07:07 <+GeKo> the crucial part i missed was making sure there is no
 local cache passed to gradle
 > 07:07 <+GeKo> otherwise gradle seems just to check the sha1 value of
 what is already there
 > 07:08 <+GeKo> instead of downloading the resources (again)
 > }}}
 > So, if we are (re-)constructing the gradle dependencies it seems to be
 important to omit `-Dmaven.repo.local=$gradle_repo` as well and not just
 replace `--offline` with `--debug` and allow network access. We should
 note that in the doc.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31568#comment:20>
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